diff --git a/user.js b/user.js new file mode 100644 index 0000000..f30c415 --- /dev/null +++ b/user.js @@ -0,0 +1,1601 @@ +// +// ********************************************************************************** +// user.js | Firefox * +// * +// https://git.nixnet.xyz/Narsil/desktop_user.js * +// *********************************************************************************/ +// +// Author : Narsil : https://git.nixnet.xyz/Narsil +// +// +// +// Based on : arkenfox : https://github.com/arkenfox/user.js +// +// +// License : https://git.nixnet.xyz/Narsil/desktop_user.js/raw/branch/master/LICENSE +// +// >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> +// STARTUP +// >>>>>>>>>>>>>>>>>>>>> +// Disable about:config warning +// FF71-72: chrome://global/content/config.xul +// FF73+: chrome://global/content/config.xhtml ***/ +user_pref("general.warnOnAboutConfig", false); // XUL/XHTML version +user_pref("browser.aboutConfig.showWarning", false); // HTML version [FF71+] +//------------------------------------- +// Disable default browser check +// [SETTING] General>Startup>Always check if Firefox is your default browser ***/ +user_pref("browser.shell.checkDefaultBrowser", false); +// ------------------------------------- +// Set START page (0=blank, 1=home, 2=last visited page, 3=resume previous session) +// [NOTE] Session Restore is not used in PB mode and is cleared with history +// [SETTING] General>Startup>Restore previous session ***/ +user_pref("browser.startup.page", 0); +// ------------------------------------- +// Set HOME+NEWWINDOW page +// about:home=Activity Stream (default), custom URL, about:blank +// [SETTING] Home>New Windows and Tabs>Homepage and new windows ***/ +user_pref("browser.startup.homepage", "about:blank"); +// ------------------------------------- +// Set NEWTAB page +// true=Activity Stream (default), false=blank page +// [SETTING] Home>New Windows and Tabs>New tabs ***/ +user_pref("browser.newtabpage.enabled", false); +user_pref("browser.newtab.preload", false); +// ------------------------------------- +// Disable Activity Stream telemetry ***/ +user_pref("browser.newtabpage.activity-stream.feeds.telemetry", false); +user_pref("browser.newtabpage.activity-stream.telemetry", false); +user_pref("browser.newtabpage.activity-stream.showSearch", false); +user_pref("browser.newtabpage.activity-stream.feeds.topsites", false); +user_pref("browser.newtabpage.activity-stream.feeds.section.highlights", false); +user_pref("browser.newtabpage.activity-stream.feeds.asrouterfeed", false); +// ------------------------------------- +// Disable Activity Stream Snippets +// Runs code received from a server (aka Remote Code Execution) and sends information back to a metrics server +// https://abouthome-snippets-service.readthedocs.io/ ***/ +user_pref("browser.newtabpage.activity-stream.feeds.snippets", false); +user_pref("browser.newtabpage.activity-stream.asrouter.providers.snippets", "{}"); +// ------------------------------------- +// Disable Activity Stream Top Stories, Pocket-based and/or sponsored content ***/ +user_pref("browser.newtabpage.activity-stream.feeds.section.topstories", false); +user_pref("browser.newtabpage.activity-stream.section.highlights.includePocket", false); +user_pref("browser.newtabpage.activity-stream.showSponsored", false); +user_pref("browser.newtabpage.activity-stream.feeds.discoverystreamfeed", false); // [FF66+] +// ------------------------------------- +// Disable Activity Stream recent Highlights in the Library [FF57+] ***/ +user_pref("browser.library.activity-stream.enabled", false); +// ------------------------------------- +// Clear default topsites +// [NOTE] This does not block you from adding your own ***/ +user_pref("browser.newtabpage.activity-stream.default.sites", ""); +// ------------------------------------- +// Start Firefox in PB (Private Browsing) mode +// https://wiki.mozilla.org/Private_Browsing +// https://spreadprivacy.com/is-private-browsing-really-private/ ***/ +// user_pref("browser.privatebrowsing.autostart", true); +// >>>>>>>>>>>>>>>>>>>>> +// GEOLOCATION ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Disable Location-Aware Browsing +// [NOTE] Best left at default "true", fingerprintable, is already behind a prompt +// https://www.mozilla.org/firefox/geolocation/ ***/ +user_pref("geo.enabled", false); +// ------------------------------------- +// Set a default permission for Location [FF58+] +// 0=always ask (default), 1=allow, 2=block +// [NOTE] Best left at default "always ask", fingerprintable via Permissions API +// [SETTING] to add site exceptions: Page Info>Permissions>Access Your Location +// [SETTING] to manage site exceptions: Options>Privacy & Security>Permissions>Location>Settings ***/ +// user_pref("permissions.default.geo", 2); +// ------------------------------------- +// Use Mozilla geolocation service instead of Google when geolocation is enabled [FF74+] +// Optionally enable logging to the console (defaults to false) ***/ +user_pref("geo.provider.network.url", ""); +// user_pref("geo.provider.network.logging.enabled", true); // [HIDDEN PREF] +// ------------------------------------- +// Disable using the OS's geolocation service ***/ +user_pref("geo.provider.ms-windows-location", false); // [WINDOWS] +user_pref("geo.provider.use_corelocation", false); // [MAC] +user_pref("geo.provider.use_gpsd", false); // [LINUX] +// ------------------------------------- +// Disable region updates +// https://firefox-source-docs.mozilla.org/toolkit/modules/toolkit_modules/Region.html ***/ +user_pref("browser.region.network.url", ""); // [FF78+] +user_pref("browser.region.update.enabled", false); // [[FF79+] +// ------------------------------------- +// Set search region +// May not be hidden if Firefox has changed your settings due to your region ***/ +user_pref("browser.search.region", "US"); // [HIDDEN PREF] +// >>>>>>>>>>>>>>>>>>>>> +// LANGUAGE / LOCALE ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Set preferred language for displaying web pages +// https://addons.mozilla.org/about ***/ +user_pref("intl.accept_languages", "en-US, en"); +// ------------------------------------- +// Enforce US English locale regardless of the system locale +// [SETUP-WEB] May break some input methods e.g xim/ibus for CJK languages +// https://bugzilla.mozilla.org/867501 +// https://bugzilla.mozilla.org/1629630 ***/ +user_pref("javascript.use_us_english_locale", true); // [HIDDEN PREF] +// >>>>>>>>>>>>>>>>>>>>> +// QUIET FOX +// >>>>>>>>>>>>>>>>>>>>> +// Disable auto-CHECKING for extension and theme updates ***/ +user_pref("extensions.update.enabled", false); +// ------------------------------------- +// Disable auto-INSTALLING Firefox updates [NON-WINDOWS FF65+] +// [NOTE] In FF65+ on Windows this SETTING (below) is now stored in a file and the pref was removed +// [SETTING] General>Firefox Updates>Check for updates but let you choose to install them ***/ +user_pref("app.update.auto", false); +// ------------------------------------- +// Disable auto-INSTALLING extension and theme updates +// [SETTING] about:addons>Extensions>[cog-wheel-icon]>Update Add-ons Automatically (toggle) ***/ +user_pref("extensions.update.autoUpdateDefault", false); +// ------------------------------------- +// Disable extension metadata +// used when installing/updating an extension, and in daily background update checks: +// when false, extension detail tabs will have no description ***/ +user_pref("extensions.getAddons.cache.enabled", false); +// ------------------------------------ +// Disable connections to Mozilla servers +user_pref("services.settings.server", ""); +// ------------------------------------- +// Disable search engine updates (e.g. OpenSearch) +// This does not affect Mozilla's built-in or Web Extension search engines ***/ +user_pref("browser.search.update", false); +// ------------------------------------- +// Disable sending Flash crash reports ***/ +user_pref("dom.ipc.plugins.flash.subprocess.crashreporter.enabled", false); +// ------------------------------------- +// Disable sending the URL of the website where a plugin crashed ***/ +user_pref("dom.ipc.plugins.reportCrashURL", false); +// ------------------------------------- +// Disable about:addons' Recommendations pane (uses Google Analytics) ***/ +user_pref("extensions.getAddons.showPane", false); // [HIDDEN PREF] +// Disable recommendations in about:addons' Extensions and Themes panes [FF68+] ***/ +user_pref("extensions.htmlaboutaddons.recommendations.enabled", false); +// ------------------------------------- +// Disable telemetry +// https://firefox-source-docs.mozilla.org/toolkit/components/telemetry/telemetry/internals/preferences.html +// https://medium.com/georg-fritzsche/data-preference-changes-in-firefox-58-2d5df9c428b5 ***/ +user_pref("toolkit.telemetry.unified", false); +user_pref("toolkit.telemetry.enabled", false); +user_pref("toolkit.telemetry.server", "data:,"); +user_pref("toolkit.telemetry.archive.enabled", false); +user_pref("toolkit.telemetry.newProfilePing.enabled", false); // [FF55+] +user_pref("toolkit.telemetry.shutdownPingSender.enabled", false); // [FF55+] +user_pref("toolkit.telemetry.updatePing.enabled", false); // [FF56+] +user_pref("toolkit.telemetry.bhrPing.enabled", false); // [FF57+] Background Hang Reporter +user_pref("toolkit.telemetry.firstShutdownPing.enabled", false); // [FF57+] +// ------------------------------------- +// Disable Telemetry Coverage +// https://blog.mozilla.org/data/2018/08/20/effectively-measuring-search-in-firefox/ ***/ +user_pref("toolkit.telemetry.coverage.opt-out", true); // [HIDDEN PREF] +user_pref("toolkit.coverage.opt-out", true); // [FF64+] [HIDDEN PREF] +user_pref("toolkit.coverage.endpoint.base", ""); +// ------------------------------------- +// Disable Health Reports +// [SETTING] Privacy & Security>Firefox Data Collection & Use>Allow Firefox to send technical... data ***/ +user_pref("datareporting.healthreport.uploadEnabled", false); +// ------------------------------------- +// Disable new data submission, master kill switch [FF41+] +// If disabled, no policy is shown or upload takes place, ever +// https://bugzilla.mozilla.org/1195552 ***/ +user_pref("datareporting.policy.dataSubmissionEnabled", false); +// ------------------------------------- +// Disable Studies (see 0503) +// [SETTING] Privacy & Security>Firefox Data Collection & Use>Allow Firefox to install and run studies ***/ +user_pref("app.shield.optoutstudies.enabled", false); +// ------------------------------------- +// Disable personalized Extension Recommendations in about:addons and AMO [FF65+] +// This pref has no effect when Health Reports are disabled +// Privacy & Security>Firefox Data Collection & Use>Allow Firefox to make personalized extension recommendations +// https://support.mozilla.org/kb/personalized-extension-recommendations ***/ +user_pref("browser.discovery.enabled", false); +// ------------------------------------- +// Disable Crash Reports ***/ +user_pref("breakpad.reportURL", ""); +user_pref("browser.tabs.crashReporting.sendReport", false); // [FF44+] +user_pref("browser.crashReports.unsubmittedCheck.enabled", false); // [FF51+] +// ------------------------------------- +// Disable backlogged Crash Reports +// [SETTING] Privacy & Security>Firefox Data Collection & Use>Allow Firefox to send backlogged crash reports ***/ +user_pref("browser.crashReports.unsubmittedCheck.autoSubmit2", false); // [FF58+] +// ------------------------------------- +// Disable Captive Portal detection +// https://www.eff.org/deeplinks/2017/08/how-captive-portals-interfere-wireless-security-and-privacy +// https://wiki.mozilla.org/Necko/CaptivePortal ***/ +user_pref("captivedetect.canonicalURL", ""); +user_pref("network.captive-portal-service.enabled", false); // [FF52+] +// ------------------------------------- +// Disable Network Connectivity checks [FF65+] +// https://bugzilla.mozilla.org/1460537 ***/ +user_pref("network.connectivity-service.enabled", false); +// >>>>>>>>>>>>>>>>>>>>> +// SAFE BROWSING (SB) +// >>>>>>>>>>>>>>>>>>>>> +// Disable SB (Safe Browsing) +// [WARNING] Do this at your own risk! These are the master switches. +// [SETTING] Privacy & Security>Security>... "Block dangerous and deceptive content" ***/ +user_pref("browser.safebrowsing.malware.enabled", false); +user_pref("browser.safebrowsing.phishing.enabled", false); +// ------------------------------------- +// Disable SB checks for downloads (both local lookups + remote) +// This is the master switch for the safebrowsing.downloads +// [SETTING] Privacy & Security>Security>... "Block dangerous downloads" ***/ +user_pref("browser.safebrowsing.downloads.enabled", false); +// ------------------------------------- +// Disable SB checks for downloads (remote) +// [SETUP-SECURITY] If you do not understand this, or you want this protection, then override it ***/ +user_pref("browser.safebrowsing.downloads.remote.enabled", false); +user_pref("browser.safebrowsing.downloads.remote.url", ""); +// ------------------------------------- +// Disable SB checks for unwanted software +// [SETTING] Privacy & Security>Security>... "Warn you about unwanted and uncommon software" ***/ +user_pref("browser.safebrowsing.downloads.remote.block_potentially_unwanted", false); +user_pref("browser.safebrowsing.downloads.remote.block_uncommon", false); +// ------------------------------------- +// Disable 'ignore this warning' on SB warnings +// If clicked, it bypasses the block for that session. This is a means for admins to enforce SB +// https://bugzilla.mozilla.org/1226490 ***/ +user_pref("browser.safebrowsing.allowOverride", false); +// ------------------------------------- +// Google connections +user_pref("browser.safebrowsing.downloads.remote.block_dangerous", false); +user_pref("browser.safebrowsing.downloads.remote.block_dangerous_host", false); +user_pref("browser.safebrowsing.provider.google.updateURL", ""); +user_pref("browser.safebrowsing.provider.google.gethashURL", ""); +user_pref("browser.safebrowsing.provider.google4.updateURL", ""); +user_pref("browser.safebrowsing.provider.google4.gethashURL", ""); +user_pref("browser.safebrowsing.provider.google.reportURL", ""); +user_pref("browser.safebrowsing.reportPhishURL", ""); +user_pref("browser.safebrowsing.provider.google4.reportURL", ""); +user_pref("browser.safebrowsing.provider.google.reportMalwareMistakeURL", ""); +user_pref("browser.safebrowsing.provider.google.reportPhishMistakeURL", ""); +user_pref("browser.safebrowsing.provider.google4.reportMalwareMistakeURL", ""); +user_pref("browser.safebrowsing.provider.google4.reportPhishMistakeURL", ""); +user_pref("browser.safebrowsing.provider.google4.dataSharing.enabled", false); +user_pref("browser.safebrowsing.provider.google4.dataSharingURL", ""); +user_pref("browser.safebrowsing.provider.google.advisory", ""); +user_pref("browser.safebrowsing.provider.google.gethashURL", ""); +user_pref("browser.safebrowsing.provider.google4.advisoryURL", ""); +user_pref("browser.safebrowsing.blockedURIs.enabled", false); +user_pref("browser.safebrowsing.provider.mozilla.gethashURL", ""); +user_pref("browser.safebrowsing.provider.mozilla.updateURL", ""); +// >>>>>>>>>>>>>>>>>>>>> +// SYSTEM ADD-ONS / EXPERIMENTS +// >>>>>>>>>>>>>>>>>>>>> +// Disable Normandy/Shield [FF60+] +// Shield is an telemetry system (including Heartbeat) that can also push and test "recipes" +// https://wiki.mozilla.org/Firefox/Shield +// https://github.com/mozilla/normandy ***/ +user_pref("app.normandy.enabled", false); +user_pref("app.normandy.api_url", ""); +user_pref("app.normandy.shieldLearnMoreUrl", ""); +// ------------------------------------- +// Disable System Add-on updates ***/ +user_pref("extensions.systemAddon.update.enabled", false); // [FF62+] +user_pref("extensions.systemAddon.update.url", ""); // [FF44+] +// ------------------------------------- +// Disable PingCentre telemetry (used in several System Add-ons) [FF57+] +// Currently blocked by 'datareporting.healthreport.uploadEnabled' ***/ +user_pref("browser.ping-centre.telemetry", false); +// ------------------------------------- +// Disable Screenshots +// alternatively in FF60+, disable uploading to the Screenshots server ***/ +user_pref("extensions.screenshots.disabled", true); // [FF55+] +user_pref("extensions.screenshots.upload-disabled", true); // [FF60+] +// ------------------------------------- +// Disable Form Autofill +// [NOTE] Stored data is NOT secure (uses a JSON file) +// [NOTE] Heuristics controls Form Autofill on forms without @autocomplete attributes +// [SETTING] Privacy & Security>Forms and Autofill>Autofill addresses +// https://wiki.mozilla.org/Firefox/Features/Form_Autofill ***/ +user_pref("extensions.formautofill.addresses.enabled", false); // [FF55+] +user_pref("extensions.formautofill.available", "off"); // [FF56+] +user_pref("extensions.formautofill.creditCards.enabled", false); // [FF56+] +user_pref("extensions.formautofill.heuristics.enabled", false); // [FF55+] +// ------------------------------------- +// Disable Web Compatibility Reporter [FF56+] +// Web Compatibility Reporter adds a "Report Site Issue" button to send data to Mozilla ***/ +user_pref("extensions.webcompat-reporter.enabled", false); +// >>>>>>>>>>>>>>>>>>>>> +// BLOCK IMPLICIT OUTBOUND [not explicitly asked for - e.g. clicked on] ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Disable link prefetching +// https://developer.mozilla.org/docs/Web/HTTP/Link_prefetching_FAQ ***/ +user_pref("network.prefetch-next", false); +// ------------------------------------- +// Disable DNS prefetching +// https://developer.mozilla.org/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control ***/ +user_pref("network.dns.disablePrefetch", true); +user_pref("network.dns.disablePrefetchFromHTTPS", true); // [DEFAULT: true] +// ------------------------------------- +// Disable predictor / prefetching ***/ +user_pref("network.predictor.enabled", false); +user_pref("network.predictor.enable-prefetch", false); // [FF48+] +// ------------------------------------- +// Disable link-mouseover opening connection to linked server +// https://news.slashdot.org/story/15/08/14/2321202/how-to-quash-firefoxs-silent-requests ***/ +user_pref("network.http.speculative-parallel-limit", 0); +// ------------------------------------- +// Enforce no "Hyperlink Auditing" (click tracking) +// https://www.bleepingcomputer.com/news/software/major-browsers-to-prevent-disabling-of-click-tracking-privacy-risk/ ***/ +user_pref("browser.send_pings", false); // [DEFAULT: false] +user_pref("browser.send_pings.require_same_host", true); // defense-in-depth +// >>>>>>>>>>>>>>>>>>>>> +// HTTP* / TCP/IP / DNS / PROXY / SOCKS etc ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Disable IPv6 +// IPv6 can be abused, especially with MAC addresses, and they do not play nice with VPNs. That's +// even assuming your ISP and/or router and/or website can handle it. Sites will fall back to IPv4 +// [STATS] Firefox telemetry (June 2020) shows only 5% of all connections are IPv6 +// [NOTE] This is just an application level fallback. Disabling IPv6 is best done at an +// OS/network level, and/or configured properly in VPN setups. If you are not masking your IP, +// then this won't make much difference. If you are masking your IP, then it can only help. +// [TEST] https://ipleak.org/ +// https://github.com/arkenfox/user.js/issues/437#issuecomment-403740626 +// https://www.internetsociety.org/tag/ipv6-security/ ***/ +user_pref("network.dns.disableIPv6", true); +// ------------------------------------- +// Disable HTTP2 +// HTTP2 raises concerns with "multiplexing" and "server push", does nothing to +// enhance privacy, and opens up a number of server-side fingerprinting opportunities. +// [WARNING] Disabling this made sense in the past, and doesn't break anything, but HTTP2 is +// at 40% (December 2019) and growing. Don't be that one person using HTTP1.1 on HTTP2 sites +// https://http2.github.io/faq/ +// https://blog.scottlogic.com/2014/11/07/http-2-a-quick-look.html +// https://http2.github.io/http2-spec/#rfc.section.10.8 +// https://queue.acm.org/detail.cfm?id=2716278 +// https://w3techs.com/technologies/details/ce-http2/all/all ***/ +// user_pref("network.http.spdy.enabled", false); +// user_pref("network.http.spdy.enabled.deps", false); +// user_pref("network.http.spdy.enabled.http2", false); +// user_pref("network.http.spdy.websockets", false); // [FF65+] +// ------------------------------------- +// Disable HTTP Alternative Services [FF37+] +// [SETUP-PERF] Relax this if you have FPI enabled *AND* you understand the +// consequences. FPI isolates these, but it was designed with the Tor protocol in mind, +// and the Tor Browser has extra protection, including enhanced sanitizing per Identity. +// https://tools.ietf.org/html/rfc7838#section-9 +// https://www.mnot.net/blog/2016/03/09/alt-svc ***/ +user_pref("network.http.altsvc.enabled", false); +user_pref("network.http.altsvc.oe", false); +// ------------------------------------- +// Enforce the proxy server to do any DNS lookups when using SOCKS +// e.g. in Tor, this stops your local DNS server from knowing your Tor destination +// as a remote Tor node will handle the DNS request +// https://trac.torproject.org/projects/tor/wiki/doc/TorifyHOWTO/WebBrowsers ***/ +user_pref("network.proxy.socks_remote_dns", true); +// ------------------------------------- +// Disable SSL False Start for HTTPS/WebSockets/SPDY connections +// https://bugzilla.mozilla.org/show_bug.cgi?id=658222 +// Avoid the client to complete its handshake before starting the actual session +user_pref("security.ssl.enable_false_start", false); +// ------------------------------------- +// Disable FTP [FF60+] +// user_pref("network.ftp.enabled", false); +// ------------------------------------- +// Disable using UNC (Uniform Naming Convention) paths [FF61+] +// [SETUP-CHROME] Can break extensions for profiles on network shares +// https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/26424 ***/ +user_pref("network.file.disable_unc_paths", true); // [HIDDEN PREF] +// ------------------------------------- +// Disable GIO as a potential proxy bypass vector +// Gvfs/GIO has a set of supported protocols like obex, network, archive, computer, dav, cdda, +// gphoto2, trash, etc. By default only smb and sftp protocols are accepted so far (as of FF64) +// https://bugzilla.mozilla.org/1433507 +// https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/23044 +// https://en.wikipedia.org/wiki/GVfs +// https://en.wikipedia.org/wiki/GIO_(software) ***/ +user_pref("network.gio.supported-protocols", ""); // [HIDDEN PREF] +// ------------------------------------- +// Disable DNS-over-HTTPS (DoH) +// See for details: https://support.mozilla.org/en-US/kb/firefox-dns-over-https +user_pref("network.trr.mode", 0); +user_pref("network.trr.uri", ""); +// >>>>>>>>>>>>>>>>>>>>> +// LOCATION BAR / SEARCH BAR / SUGGESTIONS / HISTORY / FORMS +// Change items to suit for privacy vs convenience and functionality. Consider +// your environment (no unwanted eyeballs), your device (restricted access), your device's +// unattended state (locked, encrypted, forensic hardened). +// [NOTE] The urlbar is also commonly referred to as the location bar and address bar +// #Required reading [#] https://xkcd.com/538/ +// >>>>>>>>>>>>>>>>>>>>> +// Disable location bar using search +// Don't leak URL typos to a search engine, give an error message instead. +// Examples: "secretplace,com", "secretplace/com", "secretplace com", "secret place.com" +// [NOTE] This does **not** affect explicit user action such as using search buttons in the +// dropdown, or using keyword search shortcuts you configure in options (e.g. 'd' for DuckDuckGo) +// [SETUP-CHROME] If you don't, or rarely, type URLs, or you use a default search +// engine that respects privacy, then you probably don't need this ***/ +// user_pref("keyword.enabled", false); +// ------------------------------------- +// Disable location bar domain guessing +// domain guessing intercepts DNS "hostname not found errors" and resends a +// request (e.g. by adding www or .com). This is inconsistent use (e.g. FQDNs), does not work +// via Proxy Servers (different error), is a flawed use of DNS (TLDs: why treat .com +// as the 411 for DNS errors?), privacy issues (why connect to sites you didn't +// intend to), can leak sensitive data (e.g. query strings: e.g. Princeton attack), +// and is a security risk (e.g. common typos & malicious sites set up to exploit this) ***/ +user_pref("browser.fixup.alternate.enabled", false); +// ------------------------------------- +// Display all parts of the url in the location bar ***/ +user_pref("browser.urlbar.trimURLs", false); +// ------------------------------------- +// Disable coloring of visited links - CSS history leak +// [NOTE] This has NEVER been fully "resolved": in Mozilla/docs it is stated it's +// only in 'certain circumstances' +// [TEST] https://earthlng.github.io/testpages/visited_links.html (see github wiki APPENDIX A on how to use) +// https://dbaron.org/mozilla/visited-privacy +// https://bugzilla.mozilla.org/147777 +// https://developer.mozilla.org/docs/Web/CSS/Privacy_and_the_:visited_selector ***/ +user_pref("layout.css.visited_links_enabled", false); +// ------------------------------------- +// Disable live search suggestions +// [NOTE] Both must be true for the location bar to work +// [SETUP-CHROME] Change these if you trust and use a privacy respecting search engine +// [SETTING] Search>Provide search suggestions | Show search suggestions in address bar results ***/ +user_pref("browser.search.suggest.enabled", false); +user_pref("browser.urlbar.suggest.searches", false); +// ------------------------------------- +// Disable location bar making speculative connections [FF56+] +// https://bugzilla.mozilla.org/1348275 ***/ +user_pref("browser.urlbar.speculativeConnect.enabled", false); +// ------------------------------------- +// Disable location bar leaking single words to a DNS provider **after searching** [FF78+] +// 0=never resolve single words, 1=heuristic (default), 2=always resolve +// [NOTE] For FF78 value 1 and 2 are the same and always resolve but that will change in future versions +// https://bugzilla.mozilla.org/1642623 ***/ +user_pref("browser.urlbar.dnsResolveSingleWordsAfterSearch", 0); +// ------------------------------------- +// Disable location bar suggestion types +// [SETTING] Privacy & Security>Address Bar>When using the address bar, suggest ***/ +user_pref("browser.urlbar.suggest.history", false); +user_pref("browser.urlbar.suggest.bookmark", false); +user_pref("browser.urlbar.suggest.openpage", false); +user_pref("browser.urlbar.suggest.topsites", false); // [FF78+] +// ------------------------------------- +// Disable location bar dropdown +// This value controls the total number of entries to appear in the location bar dropdown +// [NOTE] Items (bookmarks/history/openpages) with a high "frecency"/"bonus" will always +// be displayed (no we do not know how these are calculated or what the threshold is), +// and this does not affect the search by search engine suggestion +// [NOTE] This setting is only useful if you want to enable search engine keywords +// (i.e. at least one of 0850a suggestion types must be true) but you want to *limit* suggestions shown ***/ +// user_pref("browser.urlbar.maxRichResults", 0); +// ------------------------------------- +// Disable location bar autofill +// https://support.mozilla.org/en-US/kb/address-bar-autocomplete-firefox#w_url-autocomplete ***/ +user_pref("browser.urlbar.autoFill", false); +// ------------------------------------- +// Disable search and form history +// [SETUP-WEB] Be aware that autocomplete form data can be read by third parties +// [NOTE] We also clear formdata on exit +// [SETTING] Privacy & Security>History>Custom Settings>Remember search and form history +// https://blog.mindedsecurity.com/2011/10/autocompleteagain.html +// https://bugzilla.mozilla.org/381681 ***/ +user_pref("browser.formfill.enable", false); +// ------------------------------------- +// Disable browsing and download history +// [NOTE] We also clear history and downloads on exiting Firefox +// [SETTING] Privacy & Security>History>Custom Settings>Remember browsing and download history ***/ +user_pref("places.history.enabled", false); +// ------------------------------------- +// Disable Windows jumplist [WINDOWS] ***/ +user_pref("browser.taskbar.lists.enabled", false); +user_pref("browser.taskbar.lists.frequent.enabled", false); +user_pref("browser.taskbar.lists.recent.enabled", false); +user_pref("browser.taskbar.lists.tasks.enabled", false); +// ------------------------------------- +// Disable Windows taskbar preview [WINDOWS] ***/ +user_pref("browser.taskbar.previews.enable", false); +// >>>>>>>>>>>>>>>>>>>>> +// PASSWORDS ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Disable saving passwords and password alerts. +// [NOTE] This does not clear any passwords already saved +// [SETTING] Privacy & Security>Logins and Passwords>Ask to save logins and passwords for websites ***/ +user_pref("signon.rememberSignons", false); +user_pref("signon.generation.enabled", false); +user_pref("signon.management.page.breach-alerts.enabled", false); +user_pref("signon.management.page.breachAlertUrl", ""); +// ------------------------------------- +// Use a primary password +// There are no preferences for this. It is all handled internally. +// [SETTING] Privacy & Security>Logins and Passwords>Use a Primary Password +// https://support.mozilla.org/kb/use-primary-password-protect-stored-logins-and-pas ***/ +// Set how often Firefox should ask for the primary password +// 0=the first time (default), 1=every time it's needed, 2=every n minutes ***/ +user_pref("security.ask_for_password", 2); +// ------------------------------------- +// Set how often in minutes Firefox should ask for the primary password +// in minutes, default is 30 ***/ +user_pref("security.password_lifetime", 5); +// ------------------------------------- +// Disable auto-filling username & password form fields +// can leak in cross-site forms *and* be spoofed +// [NOTE] Username & password is still available when you enter the field +// [SETTING] Privacy & Security>Logins and Passwords>Autofill logins and passwords +// https://freedom-to-tinker.com/2017/12/27/no-boundaries-for-user-identities-web-trackers-exploit-browser-login-managers/ ***/ +user_pref("signon.autofillForms", false); +// ------------------------------------- +// Disable formless login capture for Password Manager [FF51+] ***/ +user_pref("signon.formlessCapture.enabled", false); +// ------------------------------------- +// Limit (or disable) HTTP authentication credentials dialogs triggered by sub-resources [FF41+] +// hardens against potential credentials phishing +// 0=don't allow sub-resources to open HTTP authentication credentials dialogs +// 1=don't allow cross-origin sub-resources to open HTTP authentication credentials dialogs +// 2=allow sub-resources to open HTTP authentication credentials dialogs (default) +user_pref("network.auth.subresource-http-auth-allow", 1); +// >>>>>>>>>>>>>>>>>>>>> +// CACHE ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Disable disk cache +// [SETUP-PERF] If you think disk cache may help (heavy tab user, high-res video), +// or you use a hardened Temporary Containers, then feel free to override this +// [NOTE] We also clear cache on exiting Firefox ***/ +user_pref("browser.cache.disk.enable", false); +// ------------------------------------- +// Disable memory cache +// capacity: -1=determine dynamically (default), 0=none, n=memory capacity in kibibytes ***/ +// user_pref("browser.cache.memory.enable", false); +// user_pref("browser.cache.memory.capacity", 0); +// ------------------------------------- +// Disable permissions manager from writing to disk [RESTART] +// [NOTE] This means any permission changes are session only +// https://bugzilla.mozilla.org/967812 ***/ +// user_pref("permissions.memory_only", true); // [HIDDEN PREF] +// ------------------------------------- +// Disable media cache from writing to disk in Private Browsing +// [NOTE] MSE (Media Source Extensions) are already stored in-memory in PB +// [SETUP-WEB] ESR78: playback might break on subsequent loading ***/ +user_pref("browser.privatebrowsing.forceMediaMemoryCache", true); // [FF75+] +user_pref("media.memory_cache_max_size", 65536); +// >>>>>>>>>>>>>>>>>>>>> +// SESSIONS & SESSION RESTORE ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Exclude "Undo Closed Tabs" in Session Restore ***/ +// user_pref("browser.sessionstore.max_tabs_undo", 0); +// ------------------------------------- +// Disable storing extra session data [SETUP-CHROME] +// extra session data contains contents of forms, scrollbar positions, cookies and POST data +// define on which sites to save extra session data: +// 0=everywhere, 1=unencrypted sites, 2=nowhere ***/ +user_pref("browser.sessionstore.privacy_level", 2); +// ------------------------------------- +// Disable resuming session from crash ***/ +// user_pref("browser.sessionstore.resume_from_crash", false); +// ------------------------------------- +// Set the minimum interval between session save operations +// Increasing this can help on older machines and some websites, as well as reducing writes +// Default is 15000 (15 secs). Try 30000 (30 secs), 60000 (1 min) etc +// [SETUP-CHROME] This can also affect entries in the "Recently Closed Tabs" feature: +// i.e. the longer the interval the more chance a quick tab open/close won't be captured. +// This longer interval *may* affect history but we cannot replicate any history not recorded +// https://bugzilla.mozilla.org/1304389 ***/ +user_pref("browser.sessionstore.interval", 30000); +// ------------------------------------- +// Disable automatic Firefox start and session restore after reboot [FF62+] [WINDOWS] +// https://bugzilla.mozilla.org/603903 ***/ +user_pref("toolkit.winRegisterApplicationRestart", false); +// >>>>>>>>>>>>>>>>>>>>> +// FAVICONS ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Disable favicons in shortcuts +// URL shortcuts use a cached randomly named .ico file which is stored in your +// profile/shortcutCache directory. The .ico remains after the shortcut is deleted. +// If set to false then the shortcuts use a generic Firefox icon ***/ +user_pref("browser.shell.shortcutFavicons", false); +// ------------------------------------- +// Disable favicons in history and bookmarks +// Stored as data blobs in favicons.sqlite, these don't reveal anything that your +// actual history (and bookmarks) already do. Your history is more detailed, so +// control that instead; e.g. disable history, clear history on close, use PB mode +// [NOTE] favicons.sqlite is sanitized on Firefox close, not in-session ***/ +user_pref("browser.chrome.site_icons", false); +// ------------------------------------- +// Disable favicons in web notifications ***/ +user_pref("alerts.showFavicons", false); // [DEFAULT: false] +// >>>>>>>>>>>>>>>>>>>>> +// SSL (Secure Sockets Layer) / TLS (Transport Layer Security) ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Require safe negotiation +// Blocks connections to servers that don't support RFC 5746 [2] as they're potentially +// vulnerable to a MiTM attack. A server *without* RFC 5746 can be safe from the attack +// if it disables renegotiations but the problem is that the browser can't know that. +// Setting this pref to true is the only way for the browser to ensure there will be +// no unsafe renegotiations on the channel between the browser and the server. +// https://wiki.mozilla.org/Security:Renegotiation +// https://tools.ietf.org/html/rfc5746 +// https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3555 ***/ +user_pref("security.ssl.require_safe_negotiation", true); +// ------------------------------------- +// Control TLS versions with min and max +// 1=TLS 1.0, 2=TLS 1.1, 3=TLS 1.2, 4=TLS 1.3 +// [STATS] Firefox telemetry (June 2020) shows only 0.16% of SSL handshakes use 1.0 or 1.1 +// [WARNING] Leave these at default, otherwise you alter your TLS fingerprint. +// https://www.ssllabs.com/ssl-pulse/ ***/ +// user_pref("security.tls.version.min", 3); // [DEFAULT: 3] +// user_pref("security.tls.version.max", 4); +// ------------------------------------- +// Enforce TLS 1.0 and 1.1 downgrades as session only */ +user_pref("security.tls.version.enable-deprecated", false); +// ------------------------------------- +// Disable SSL session tracking [FF36+] +// SSL Session IDs are unique, last up to 24hrs in Firefox, and can be used for tracking +// [SETUP-PERF] Relax this if you have FPI enabled *AND* you understand the +// consequences. FPI isolates these, but it was designed with the Tor protocol in mind, +// and the Tor Browser has extra protection, including enhanced sanitizing per Identity. +// https://tools.ietf.org/html/rfc5077 +// https://bugzilla.mozilla.org/967977 +// https://arxiv.org/abs/1810.07304 ***/ +user_pref("security.ssl.disable_session_identifiers", true); // [HIDDEN PREF] +// ------------------------------------- +// Disable SSL Error Reporting +// https://firefox-source-docs.mozilla.org/browser/base/sslerrorreport/preferences.html ***/ +user_pref("security.ssl.errorReporting.automatic", false); +user_pref("security.ssl.errorReporting.enabled", false); +user_pref("security.ssl.errorReporting.url", ""); +// ------------------------------------- +// Disable TLS1.3 0-RTT (round-trip time) [FF51+] +// https://github.com/tlswg/tls13-spec/issues/1001 +// https://blog.cloudflare.com/tls-1-3-overview-and-q-and-a/ ***/ +user_pref("security.tls.enable_0rtt_data", false); +// >>>>>>>>>>>>>>>>>>>>> +// OCSP (Online Certificate Status Protocol) +// >>>>>>>>>>>>>>>>>>>>> +// Enable OCSP Stapling +// https://blog.mozilla.org/security/2013/07/29/ocsp-stapling-in-firefox/ ***/ +user_pref("security.ssl.enable_ocsp_stapling", false); +// ------------------------------------- +// Control when to use OCSP fetching (to confirm current validity of certificates) +// 0=disabled, 1=enabled (default), 2=enabled for EV certificates only +// OCSP (non-stapled) leaks information about the sites you visit to the CA (cert authority) +// It's a trade-off between security (checking) and privacy (leaking info to the CA) +// [NOTE] This pref only controls OCSP fetching and does not affect OCSP stapling +// https://en.wikipedia.org/wiki/Ocsp ***/ +user_pref("security.OCSP.enabled", 0); +// ------------------------------------- +// Set OCSP fetch failures (non-stapled) to hard-fail [SETUP-WEB] +// When a CA cannot be reached to validate a cert, Firefox just continues the connection (=soft-fail) +// Setting this pref to true tells Firefox to instead terminate the connection (=hard-fail) +// It is pointless to soft-fail when an OCSP fetch fails: you cannot confirm a cert is still valid (it +// could have been revoked) and/or you could be under attack (e.g. malicious blocking of OCSP servers) +// https://blog.mozilla.org/security/2013/07/29/ocsp-stapling-in-firefox/ +// https://www.imperialviolet.org/2014/04/19/revchecking.html ***/ +user_pref("security.OCSP.require", false); +// >>>>>>>>>>>>>>>>>>>>> +// CERTS / HPKP (HTTP Public Key Pinning) ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Disable or limit SHA-1 certificates +// 0=all SHA1 certs are allowed +// 1=all SHA1 certs are blocked +// 2=deprecated option that now maps to 1 +// 3=only allowed for locally-added roots (e.g. anti-virus) +// 4=only allowed for locally-added roots or for certs in 2015 and earlier +// [SETUP-CHROME] When disabled, some man-in-the-middle devices (e.g. security scanners and +// antivirus products, may fail to connect to HTTPS sites. SHA-1 is *almost* obsolete. +// [1] https://blog.mozilla.org/security/2016/10/18/phasing-out-sha-1-on-the-public-web/ ***/ +user_pref("security.pki.sha1_enforcement_level", 1); +// ------------------------------------- +// Disable Windows 8.1's Microsoft Family Safety cert [FF50+] [WINDOWS] +// 0=disable detecting Family Safety mode and importing the root +// 1=only attempt to detect Family Safety mode (don't import the root) +// 2=detect Family Safety mode and import the root +// https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/21686 ***/ +user_pref("security.family_safety.mode", 0); +// ------------------------------------- +// Disable intermediate certificate caching (fingerprinting attack vector) [FF41+] [RESTART] +// [NOTE] This affects login/cert/key dbs. The effect is all credentials are session-only. +// Saved logins and passwords are not available. Reset the pref and restart to return them. +// https://shiftordie.de/blog/2017/02/21/fingerprinting-firefox-users-with-cached-intermediate-ca-certificates-fiprinca/ ***/ +// user_pref("security.nocertdb", true); // [HIDDEN PREF] +// ------------------------------------- +// Enforce strict pinning +// PKP (Public Key Pinning) 0=disabled 1=allow user MiTM (such as your antivirus), 2=strict +// [SETUP-WEB] If you rely on an AV (antivirus) to protect your web browsing +// by inspecting ALL your web traffic, then leave at current default=1 +// https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/16206 ***/ +user_pref("security.cert_pinning.enforcement_level", 2); +// >>>>>>>>>>>>>>>>>>>>> +// MIXED CONTENT ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Enforce no insecure active content on https pages +// https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/21323 ***/ +user_pref("security.mixed_content.block_active_content", true); // [DEFAULT: true] +// ------------------------------------- +// Disable insecure passive content (such as images) on https pages [SETUP-WEB] ***/ +user_pref("security.mixed_content.block_display_content", true); +// ------------------------------------- +// Lock unencrypted requests from Flash on encrypted pages to mitigate MitM attacks [FF59+] +// https://bugzilla.mozilla.org/1190623 ***/ +user_pref("security.mixed_content.block_object_subrequest", true); +// ------------------------------------- +// Enable HTTPS-Only mode [FF76+] +// When "https_only_mode" (all windows) is true, "https_only_mode_pbm" (private windows only) is ignored +// [WARNING] This is experimental [1] and you can't set exceptions if FPI is enabled (fixed in FF83) +// [SETTING] to add site exceptions: Page Info>Permissions>Use insecure HTTP (FF80+) +// [SETTING] Privacy & Security>HTTPS-Only Mode (FF80+ with browser.preferences.exposeHTTPSOnly = true) +// https://bugzilla.mozilla.org/1613063 [META] +// https://bugzilla.mozilla.org/1647829 ***/ +user_pref("dom.security.https_only_mode", true); // [FF76+] +user_pref("dom.security.https_only_mode_pbm", true); // [FF80+] +user_pref("dom.security.https_only_mode.upgrade_local", true); // [FF77+] +// >>>>>>>>>>>>>>>>>>>>> +// CIPHERS [WARNING: do not meddle with your cipher suite] +// >>>>>>>>>>>>>>>>>>>>> +// Disable 3DES (effective key size < 128 and no PFS) +// https://en.wikipedia.org/wiki/3des#Security +// https://en.wikipedia.org/wiki/Meet-in-the-middle_attack +// https://www-archive.mozilla.org/projects/security/pki/nss/ssl/fips-ssl-ciphersuites.html ***/ +// user_pref("security.ssl3.rsa_des_ede3_sha", false); +// ------------------------------------- +// Disable the remaining non-modern cipher suites as of FF78 (in order of preferred by FF) ***/ +// user_pref("security.ssl3.ecdhe_ecdsa_aes_256_sha", false); +// user_pref("security.ssl3.ecdhe_ecdsa_aes_128_sha", false); +// user_pref("security.ssl3.ecdhe_rsa_aes_128_sha", false); +// user_pref("security.ssl3.ecdhe_rsa_aes_256_sha", false); +// user_pref("security.ssl3.rsa_aes_128_sha", false); // no PFS +// user_pref("security.ssl3.rsa_aes_256_sha", false); // no PFS +// >>>>>>>>>>>>>>>>>>>>> +// UI (User Interface) ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Display warning on the padlock for "broken security" +// Bug: warning padlock not indicated for subresources on a secure page! +// [STATS] SSL Labs (June 2020) reports 98.8% of sites have secure renegotiation +// https://wiki.mozilla.org/Security:Renegotiation +// https://bugzilla.mozilla.org/1353705 +// https://www.ssllabs.com/ssl-pulse/ ***/ +user_pref("security.ssl.treat_unsafe_negotiation_as_broken", true); +// ------------------------------------- +// Control "Add Security Exception" dialog on SSL warnings +// 0=do neither 1=pre-populate url 2=pre-populate url + pre-fetch cert (default) +// [1] https://github.com/pyllyukko/user.js/issues/210 ***/ +user_pref("browser.ssl_override_behavior", 1); +// ------------------------------------- +// Display advanced information on Insecure Connection warning pages +// only works when it's possible to add an exception +// i.e. it doesn't work for HSTS discrepancies (https://subdomain.preloaded-hsts.badssl.com/) +// [TEST] https://expired.badssl.com/ ***/ +user_pref("browser.xul.error_pages.expert_bad_cert", true); +// ------------------------------------- +// Display "insecure" icon and "Not Secure" text on HTTP sites ***/ +// user_pref("security.insecure_connection_icon.enabled", true); // [FF59+] [DEFAULT: true] +user_pref("security.insecure_connection_text.enabled", true); // [FF60+] +// >>>>>>>>>>>>>>>>>>>>> +// FONTS ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Disable websites choosing fonts (0=block, 1=allow) +// This can limit most (but not all) JS font enumeration which is a high entropy fingerprinting vector +// [WARNING] **DO NOT USE**: in FF80+ RFP covers this, and non-RFP users should use font vis +// [SETTING] General>Language and Appearance>Fonts & Colors>Advanced>Allow pages to choose... ***/ +user_pref("browser.display.use_document_fonts", 0); +// ------------------------------------- +// Disable icon fonts (glyphs) and local fallback rendering +// https://bugzilla.mozilla.org/789788 +// https://gitlab.torproject.org/legacy/trac/-/issues/8455 ***/ +// user_pref("gfx.downloadable_fonts.enabled", false); // [FF41+] +// user_pref("gfx.downloadable_fonts.fallback_delay", -1); +// ------------------------------------- +// Disable rendering of SVG OpenType fonts +// https://wiki.mozilla.org/SVGOpenTypeFonts - iSECPartnersReport recommends to disable this ***/ +user_pref("gfx.font_rendering.opentype_svg.enabled", false); +// ------------------------------------- +// Disable graphite +// Graphite has had many critical security issues in the past +// https://www.mozilla.org/security/advisories/mfsa2017-15/#CVE-2017-7778 +// https://en.wikipedia.org/wiki/Graphite_(SIL) ***/ +user_pref("gfx.font_rendering.graphite.enabled", false); +// ------------------------------------- +// Limit system font exposure to a whitelist [FF52+] [RESTART] +// If the whitelist is empty, then whitelisting is considered disabled and all fonts are allowed +// [WARNING] **DO NOT USE**: in FF80+ RFP covers this, and non-RFP users should use font vis +// [NOTE] In FF81+ the whitelist **overrides** RFP's font visibility +// https://bugzilla.mozilla.org/1121643 ***/ +// user_pref("font.system.whitelist", ""); // [HIDDEN PREF] +// >>>>>>>>>>>>>>>>>>>>> +// HEADERS / REFERERS +// >>>>>>>>>>>>>>>>>>>>> +// ALL: control when images/links send a referer +// 0=never, 1=send only when links are clicked, 2=for links and images (default) ***/ +// user_pref("network.http.sendRefererHeader", 2); // [DEFAULT: 2] +// ------------------------------------- +// ALL: control the amount of information to send +// 0=send full URI (default), 1=scheme+host+port+path, 2=scheme+host+port ***/ +user_pref("network.http.referer.trimmingPolicy", 2); // [DEFAULT: 0] +// ------------------------------------- +// CROSS ORIGIN: control when to send a referer +// 0=always (default), 1=only if base domains match, 2=only if hosts match +// [SETUP-WEB] Known to cause issues with older modems/routers and some sites e.g vimeo, icloud ***/ +user_pref("network.http.referer.XOriginPolicy", 2); +// ------------------------------------- +// CROSS ORIGIN: control the amount of information to send [FF52+] +// 0=send full URI (default), 1=scheme+host+port+path, 2=scheme+host+port ***/ +user_pref("network.http.referer.XOriginTrimmingPolicy", 2); // [DEFAULT: 0] +// ------------------------------------- +// ALL: disable spoofing a referer +// [WARNING] Do not set this to true, as spoofing effectively disables the anti-CSRF +// (Cross-Site Request Forgery) protections that some sites may rely on ***/ +// user_pref("network.http.referer.spoofSource", false); // [DEFAULT: false] +// ------------------------------------- +// ALL: set the default Referrer Policy [FF59+] +// 0=no-referer, 1=same-origin, 2=strict-origin-when-cross-origin, 3=no-referrer-when-downgrade +// [NOTE] This is only a default, it can be overridden by a site-controlled Referrer Policy +// https://www.w3.org/TR/referrer-policy/ +// https://developer.mozilla.org/docs/Web/HTTP/Headers/Referrer-Policy +// https://blog.mozilla.org/security/2018/01/31/preventing-data-leaks-by-stripping-path-information-in-http-referrers/ ***/ +// user_pref("network.http.referer.defaultPolicy", 3); // [DEFAULT: 3] +// user_pref("network.http.referer.defaultPolicy.pbmode", 2); // [DEFAULT: 2] +// ------------------------------------- +// TOR: hide (not spoof) referrer when leaving a .onion domain [FF54+] +// [NOTE] Firefox cannot access .onion sites by default. We recommend you use +// the Tor Browser which is specifically designed for hidden services +// https://bugzilla.mozilla.org/1305144 ***/ +user_pref("network.http.referer.hideOnionSource", true); +// ------------------------------------- +// ALL: enable the DNT (Do Not Track) HTTP header +// [NOTE] DNT is enforced with Enhanced Tracking Protection regardless of this pref +// [SETTING] Privacy & Security>Enhanced Tracking Protection>Send websites a "Do Not Track" signal... ***/ +user_pref("privacy.donottrackheader.enabled", false); +// >>>>>>>>>>>>>>>>>>>>> +// CONTAINERS +// >>>>>>>>>>>>>>>>>>>>> +// Enable Container Tabs setting in preferences [FF50+] +// https://bugzilla.mozilla.org/1279029 ***/ +user_pref("privacy.userContext.ui.enabled", true); +// ------------------------------------- +// Enable Container Tabs [FF50+] +// [SETTING] General>Tabs>Enable Container Tabs ***/ +user_pref("privacy.userContext.enabled", true); +// ------------------------------------- +// Set behaviour on "+ Tab" button to display container menu on left click [FF74+] +// [NOTE] The menu is always shown on long press and right click +// [SETTING] General>Tabs>Enable Container Tabs>Settings>Select a container for each new tab ***/ +// user_pref("privacy.userContext.newTabContainerOnLeftClick.enabled", true); +// >>>>>>>>>>>>>>>>>>>>> +// PLUGINS ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Disable Flash plugin +// 0=deactivated, 1=ask, 2=enabled +// ESR52.x is the last branch to *fully* support NPAPI, FF52+ stable only supports Flash +// [NOTE] You can still override individual sites via site permissions ***/ +user_pref("plugin.state.flash", 0); +// ------------------------------------- +// Disable GMP (Gecko Media Plugins) +// https://wiki.mozilla.org/GeckoMediaPlugins ***/ +user_pref("media.gmp-provider.enabled", false); +// ------------------------------------- +// Disable widevine CDM (Content Decryption Module) +// [SETUP-WEB] if you *need* CDM, e.g. Netflix, Amazon Prime, Hulu, whatever ***/ +user_pref("media.gmp-widevinecdm.visible", false); +user_pref("media.gmp-widevinecdm.enabled", false); +user_pref("media.gmp-manager.url", ""); +user_pref("media.gmp-manager.url.override", ""); +// ------------------------------------- +// Disable all DRM content (EME: Encryption Media Extension) +// [SETUP-WEB] if you *need* EME, e.g. Netflix, Amazon Prime, Hulu, whatever +// [SETTING] General>DRM Content>Play DRM-controlled content +// https://www.eff.org/deeplinks/2017/10/drms-dead-canary-how-we-just-lost-web-what-we-learned-it-and-what-we-need-do-next ***/ +user_pref("media.eme.enabled", false); +// >>>>>>>>>>>>>>>>>>>>> +// MEDIA / CAMERA / MIC ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Disable WebRTC (Web Real-Time Communication) +// [SETUP-WEB] WebRTC can leak your IP address from behind your VPN, but if this is not +// in your threat model, and you want Real-Time Communication, this is the pref for you +// https://www.privacytools.io/#webrtc ***/ +user_pref("media.peerconnection.enabled", false); +// ------------------------------------- +// Limit WebRTC IP leaks if using WebRTC +// In FF70+ these settings match Mode 4 (Mode 3 in older versions) +// [TEST] https://browserleaks.com/webrtc +// https://bugzilla.mozilla.org/buglist.cgi?bug_id=1189041,1297416,1452713 +// https://wiki.mozilla.org/Media/WebRTC/Privacy +// https://tools.ietf.org/html/draft-ietf-rtcweb-ip-handling-12#section-5.2 ***/ +user_pref("media.peerconnection.ice.default_address_only", true); +user_pref("media.peerconnection.ice.no_host", true); // [FF51+] +user_pref("media.peerconnection.ice.proxy_only_if_behind_proxy", true); // [FF70+] +// ------------------------------------- +// Disable WebGL (Web Graphics Library) +// [SETUP-WEB] When disabled, may break some websites. When enabled, provides high entropy, +// especially with readPixels(). Some of the other entropy is lessened with RFP +// https://www.contextis.com/resources/blog/webgl-new-dimension-browser-exploitation/ +// https://security.stackexchange.com/questions/13799/is-webgl-a-security-concern ***/ +user_pref("webgl.disabled", true); +user_pref("webgl.enable-webgl2", false); +// ------------------------------------- +// Limit WebGL ***/ +user_pref("webgl.min_capability_mode", true); +user_pref("webgl.disable-fail-if-major-performance-caveat", true); +// ------------------------------------- +// Disable screensharing ***/ +user_pref("media.getusermedia.screensharing.enabled", false); +user_pref("media.getusermedia.browser.enabled", false); +user_pref("media.getusermedia.audiocapture.enabled", false); +// ------------------------------------- +// Set a default permission for Camera/Microphone [FF58+] +// 0=always ask (default), 1=allow, 2=block +// [SETTING] to add site exceptions: Page Info>Permissions>Use the Camera/Microphone +// [SETTING] to manage site exceptions: Options>Privacy & Security>Permissions>Camera/Microphone>Settings ***/ +user_pref("permissions.default.camera", 2); +user_pref("permissions.default.microphone", 2); +// ------------------------------------- +// Disable autoplay of HTML5 media [FF63+] +// 0=Allow all, 1=Block non-muted media (default in FF67+), 2=Prompt (removed in FF66), 5=Block all (FF69+) +// [NOTE] You can set exceptions under site permissions +// [SETTING] Privacy & Security>Permissions>Autoplay>Settings>Default for all websites ***/ +// user_pref("media.autoplay.default", 5); +// ------------------------------------- +// Disable autoplay of HTML5 media if you interacted with the site [FF78+] +// 0=sticky (default), 1=transient, 2=user +// [NOTE] If you have trouble with some video sites, then add an exception +// https://html.spec.whatwg.org/multipage/interaction.html#sticky-activation ***/ +user_pref("media.autoplay.blocking_policy", 2); +// >>>>>>>>>>>>>>>>>>>>> +// WINDOW MEDDLING & LEAKS / POPUPS ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Prevent scripts from moving and resizing open windows ***/ +user_pref("dom.disable_window_move_resize", true); +// ------------------------------------- +// Open links targeting new windows in a new tab instead +// This stops malicious window sizes and some screen resolution leaks. +// You can still right-click a link and open in a new window. +// [TEST] https://arkenfox.github.io/TZP/tzp.html#screen +// https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/9881 ***/ +user_pref("browser.link.open_newwindow", 3); // 1=most recent window or tab 2=new window, 3=new tab +user_pref("browser.link.open_newwindow.restriction", 0); +// ------------------------------------- +// Disable Fullscreen API (requires user interaction) to prevent screen-resolution leaks +// [NOTE] You can still manually toggle the browser's fullscreen state (F11), +// but this pref will disable embedded video/game fullscreen controls, e.g. youtube +// [TEST] https://arkenfox.github.io/TZP/tzp.html#screen ***/ +// user_pref("full-screen-api.enabled", false); +// ------------------------------------- +// Block popup windows +// [SETTING] Privacy & Security>Permissions>Block pop-up windows ***/ +user_pref("dom.disable_open_during_load", true); +// ------------------------------------- +// Limit events that can cause a popup [SETUP-WEB] +// default is "change click dblclick auxclick mouseup pointerup notificationclick reset submit touchend contextmenu" ***/ +user_pref("dom.popup_allowed_events", "click dblclick"); +// >>>>>>>>>>>>>>>>>>>>> +// WEB WORKERS +// >>>>>>>>>>>>>>>>>>>>> +// Disable service workers [FF32, FF44-compat] +// Service workers essentially act as proxy servers that sit between web apps, and the +// browser and network, are event driven, and can control the web page/site it is associated +// with, intercepting and modifying navigation and resource requests, and caching resources. +// [NOTE] Service worker APIs are hidden (in Firefox) and cannot be used when in PB mode. +// [NOTE] Service workers only run over HTTPS. Service workers have no DOM access. +// [SETUP-WEB] Disabling service workers will break some sites. This pref is required true for +// service worker notifications, push notifications and service worker +// cache. If you enable this pref, then check those settings as well ***/ +user_pref("dom.serviceWorkers.enabled", false); +// ------------------------------------- +// Disable Web Notifications +// [NOTE] Web Notifications can also use service workers and are behind a prompt +// https://developer.mozilla.org/docs/Web/API/Notifications_API ***/ +// user_pref("dom.webnotifications.enabled", false); // [FF22+] +// user_pref("dom.webnotifications.serviceworker.enabled", false); // [FF44+] +// ------------------------------------- +// Disable Push Notifications [FF44+] +// Push is an API that allows websites to send you (subscribed) messages even when the site +// isn't loaded, by pushing messages to your userAgentID through Mozilla's Push Server. +// [NOTE] Push requires service workers to subscribe to and display, and is behind +// a prompt. Disabling service workers alone doesn't stop Firefox polling the +// Mozilla Push Server. To remove all subscriptions, reset your userAgentID (in about:config +// or on start), and you will get a new one within a few seconds. +// https://support.mozilla.org/en-US/kb/push-notifications-firefox +// https://developer.mozilla.org/en-US/docs/Web/API/Push_API ***/ +user_pref("dom.push.enabled", false); +user_pref("dom.push.connection.enabled", false); +user_pref("dom.push.serverURL", ""); +user_pref("dom.push.userAgentID", ""); +// ------------------------------------- +// Set a default permission for Notifications [FF58+] +// 0=always ask (default), 1=allow, 2=block +// [NOTE] Best left at default "always ask", fingerprintable via Permissions API +// [SETTING] to add site exceptions: Page Info>Permissions>Receive Notifications +// [SETTING] to manage site exceptions: Options>Privacy & Security>Permissions>Notifications>Settings ***/ +// user_pref("permissions.default.desktop-notification", 2); +// >>>>>>>>>>>>>>>>>>>>> +// DOM (DOCUMENT OBJECT MODEL) & JAVASCRIPT ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Disable website control over browser right-click context menu +// [NOTE] Shift-Right-Click will always bring up the browser right-click context menu ***/ +// user_pref("dom.event.contextmenu.enabled", false); +// ------------------------------------- +// Disable website access to clipboard events/content [SETUP-HARDEN] +// [NOTE] This will break some sites' functionality e.g. Outlook, Twitter, Facebook, Wordpress +// This applies to onCut/onCopy/onPaste events - i.e. it requires interaction with the website +// [WARNING] If both 'middlemouse.paste' and 'general.autoScroll' are true (at least one +// is default false) then enabling this pref can leak clipboard content +// https://bugzilla.mozilla.org/1528289 */ +user_pref("dom.event.clipboardevents.enabled", false); +// ------------------------------------- +// Disable clipboard commands (cut/copy) from "non-privileged" content [FF41+] +// this disables document.execCommand("cut"/"copy") to protect your clipboard +// https://bugzilla.mozilla.org/1170911 ***/ +user_pref("dom.allow_cut_copy", false); +// ------------------------------------- +// Disable "Confirm you want to leave" dialog on page close +// Does not prevent JS leaks of the page close event. +// https://developer.mozilla.org/docs/Web/Events/beforeunload +// https://support.mozilla.org/questions/1043508 ***/ +user_pref("dom.disable_beforeunload", true); +// ------------------------------------- +// Disable shaking the screen ***/ +user_pref("dom.vibrator.enabled", false); +// ------------------------------------- +// Dsable asm.js [FF22+] [SETUP-PERF] +// http://asmjs.org/ +// https://www.mozilla.org/security/advisories/mfsa2015-29/ +// https://www.mozilla.org/security/advisories/mfsa2015-50/ +// https://www.mozilla.org/security/advisories/mfsa2017-01/#CVE-2017-5375 +// https://www.mozilla.org/security/advisories/mfsa2017-05/#CVE-2017-5400 +// https://rh0dev.github.io/blog/2017/the-return-of-the-jit/ ***/ +user_pref("javascript.options.asmjs", false); +// ------------------------------------- +// Disable Ion and baseline JIT to harden against JS exploits [SETUP-HARDEN] +// [NOTE] In FF75+, when **both** Ion and JIT are disabled, **and** the new +// hidden pref is enabled, then Ion can still be used by extensions (1599226) +// [WARNING] Disabling Ion/JIT can cause some site issues and performance loss +// https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0817 ***/ +// user_pref("javascript.options.ion", false); +// user_pref("javascript.options.baselinejit", false); +// user_pref("javascript.options.jit_trustedprincipals", true); // [FF75+] [HIDDEN PREF] +// ------------------------------------- +// Disable WebAssembly [FF52+] [SETUP-PERF] +// https://developer.mozilla.org/docs/WebAssembly ***/ +user_pref("javascript.options.wasm", false); +// ------------------------------------- +// Enable (limited but sufficient) window.opener protection [FF65+] +// Makes rel=noopener implicit for target=_blank in anchor and area elements when no rel attribute is set ***/ +user_pref("dom.targetBlankNoOpener.enabled", true); // [DEFAULT: true FF79+] +// >>>>>>>>>>>>>>>>>>>>> +// HARDWARE FINGERPRINTING ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Disable Battery Status API +// Initially a Linux issue (high precision readout) that was fixed. +// However, it is still another metric for fingerprinting, used to raise entropy. +// e.g. do you have a battery or not, current charging status, charge level, times remaining etc +// [NOTE] From FF52+ Battery Status API is only available in chrome/privileged code +// https://bugzilla.mozilla.org/1313580 ***/ +user_pref("dom.battery.enabled", false); +// ------------------------------------- +// Disable media device enumeration [FF29+] +// [NOTE] media.peerconnection.enabled should also be set to false +// https://wiki.mozilla.org/Media/getUserMedia +// https://developer.mozilla.org/docs/Web/API/MediaDevices/enumerateDevices ***/ +user_pref("media.navigator.enabled", false); +// ------------------------------------- +// Disable hardware acceleration to reduce graphics fingerprinting [SETUP-HARDEN] +// [WARNING] Affects text rendering (fonts will look different), impacts video performance, +// and parts of Quantum that utilize the GPU will also be affected as they are rolled out +// [SETTING] General>Performance>Custom>Use hardware acceleration when available +// https://wiki.mozilla.org/Platform/GFX/HardwareAcceleration ***/ +// user_pref("gfx.direct2d.disabled", true); // [WINDOWS] +// user_pref("layers.acceleration.disabled", true); +// ------------------------------------- +// Disable Web Audio API [FF51+] +// https://bugzilla.mozilla.org/1288359 ***/ +user_pref("dom.webaudio.enabled", false); +// ------------------------------------- +// Disable Media Capabilities API [FF63+] +// [WARNING] This *may* affect media performance if disabled, no one is sure +// https://github.com/WICG/media-capabilities +// https://wicg.github.io/media-capabilities/#security-privacy-considerations ***/ +// user_pref("media.media-capabilities.enabled", false); +// ------------------------------------- +// Disable virtual reality devices +// Optional protection depending on your connected devices +// https://developer.mozilla.org/docs/Web/API/WebVR_API ***/ +// user_pref("dom.vr.enabled", false); +// ------------------------------------- +// Set a default permission for Virtual Reality [FF73+] +// 0=always ask (default), 1=allow, 2=block +// [SETTING] to add site exceptions: Page Info>Permissions>Access Virtual Reality Devices +// [SETTING] to manage site exceptions: Options>Privacy & Security>Permissions>Virtual Reality>Settings ***/ +// user_pref("permissions.default.xr", 0); +// >>>>>>>>>>>>>>>>>>>>> +// MISCELLANEOUS ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Prevent accessibility services from accessing your browser [RESTART] +// [SETTING] Privacy & Security>Permissions>Prevent accessibility services from accessing your browser (FF80 or lower) +// https://support.mozilla.org/kb/accessibility-services ***/ +user_pref("accessibility.force_disabled", 1); +// ------------------------------------- +// Disable sending additional analytics to web servers +// https://developer.mozilla.org/docs/Web/API/Navigator/sendBeacon ***/ +user_pref("beacon.enabled", false); +// ------------------------------------- +// Rremove temp files opened with an external application +// https://bugzilla.mozilla.org/302433 ***/ +user_pref("browser.helperApps.deleteTempFileOnExit", true); +// ------------------------------------- +// Disable page thumbnail collection +// look in profile/thumbnails directory - you may want to clean that out ***/ +user_pref("browser.pagethumbnails.capturing_disabled", true); // [HIDDEN PREF] +// ------------------------------------- +// Disable UITour backend so there is no chance that a remote page can use it ***/ +user_pref("browser.uitour.enabled", false); +user_pref("browser.uitour.url", ""); +// ------------------------------------- +// Disable various developer tools in browser context +// [SETTING] Devtools>Advanced Settings>Enable browser chrome and add-on debugging toolboxes +// https://github.com/pyllyukko/user.js/issues/179#issuecomment-246468676 ***/ +user_pref("devtools.chrome.enabled", false); +// ------------------------------------- +// Reset remote debugging to disabled +// https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/16222 ***/ +user_pref("devtools.debugger.remote-enabled", false); // [DEFAULT: false] +user_pref("devtools.webide.autoinstallADBHelper", false); +// ------------------------------------- +// Disable MathML (Mathematical Markup Language) [FF51+] [SETUP-HARDEN] +// [TEST] https://arkenfox.github.io/TZP/tzp.html#misc +// https://bugzilla.mozilla.org/1173199 ***/ +// user_pref("mathml.disabled", true); +// ------------------------------------- +// Disable in-content SVG (Scalable Vector Graphics) [FF53+] +// [WARNING] Expect breakage incl. youtube player controls. Best left for a "hardened" profile. +// https://bugzilla.mozilla.org/1216893 ***/ +// user_pref("svg.disabled", true); +// ------------------------------------- +// Disable middle mouse click opening links from clipboard +// https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/10089 ***/ +user_pref("middlemouse.contentLoadURL", false); +// ------------------------------------- +// Limit HTTP redirects (this does not control redirects with HTML meta tags or JS) +// [NOTE] A low setting of 5 or under will probably break some sites (e.g. gmail logins) +// To control HTML Meta tag and JS redirects, use an extension. Default is 20 ***/ +user_pref("network.http.redirection-limit", 10); +// ------------------------------------- +// Disable websites overriding Firefox's keyboard shortcuts [FF58+] +// 0 (default) or 1=allow, 2=block +// [SETTING] to add site exceptions: Page Info>Permissions>Override Keyboard Shortcuts ***/ +// user_pref("permissions.default.shortcuts", 2); +// ------------------------------------- +// Remove special permissions for certain mozilla domains [FF35+] +// resource://app/defaults/permissions ***/ +user_pref("permissions.manager.defaultsUrl", ""); +// ------------------------------------- +// Remove webchannel whitelist ***/ +user_pref("webchannel.allowObject.urlWhitelist", ""); +// ------------------------------------- +// Enforce Punycode for Internationalized Domain Names to eliminate possible spoofing +// Firefox has *some* protections, but it is better to be safe than sorry +// [SETUP-WEB] Might be undesirable for non-latin alphabet users since legitimate IDN's are also punycoded +// [TEST] https://www.xn--80ak6aa92e.com/ (www.apple.com) +// https://wiki.mozilla.org/IDN_Display_Algorithm +// https://en.wikipedia.org/wiki/IDN_homograph_attack +// CVE-2017-5383: https://www.mozilla.org/security/advisories/mfsa2017-02/ +// https://www.xudongz.com/blog/2017/idn-phishing/ ***/ +user_pref("network.IDN_show_punycode", true); +// ------------------------------------- +// Enforce Firefox's built-in PDF reader [SETUP-CHROME] +// This setting controls if the option "Display in Firefox" is available in the setting below +// and by effect controls whether PDFs are handled in-browser or externally ("Ask" or "Open With") +// PROS: pdfjs is lightweight, open source, and as secure/vetted as any pdf reader out there (more than most) +// Exploits are rare (1 serious case in 4 yrs), treated seriously and patched quickly. +// It doesn't break "state separation" of browser content (by not sharing with OS, independent apps). +// It maintains disk avoidance and application data isolation. It's convenient. You can still save to disk. +// CONS: You may prefer a different pdf reader for security reasons +// CAVEAT: JS can still force a pdf to open in-browser by bundling its own code (rare) +// [SETTING] General>Applications>Portable Document Format (PDF) ***/ +user_pref("pdfjs.disabled", false); // [DEFAULT: false] +// ------------------------------------- +// Disable links launching Windows Store on Windows 8/8.1/10 [WINDOWS] ***/ +user_pref("network.protocol-handler.external.ms-windows-store", false); +// ------------------------------------- +// Enforce no system colors; they can be fingerprinted +// [SETTING] General>Language and Appearance>Fonts and Colors>Colors>Use system colors ***/ +user_pref("browser.display.use_system_colors", false); // [DEFAULT: false] +// ------------------------------------- +// Disable permissions delegation [FF73+] +// Currently applies to cross-origin geolocation, camera, mic and screen-sharing +// permissions, and fullscreen requests. Disabling delegation means any prompts +// for these will show/use their correct 3rd party origin +// https://groups.google.com/forum/#!topic/mozilla.dev.platform/BdFOMAuCGW8/discussion */ +user_pref("permissions.delegation.enabled", false); +// >>>>>>>>>>>>>>>>>>>>> +// DOWNLOADS ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Discourage downloading to desktop +// 0=desktop, 1=downloads (default), 2=last used +// [SETTING] To set your default "downloads": General>Downloads>Save files to ***/ +// user_pref("browser.download.folderList", 2); +// ------------------------------------- +// Enforce user interaction for security by always asking where to download +// [SETUP-CHROME] On Android this blocks longtapping and saving images +// [SETTING] General>Downloads>Always ask you where to save files ***/ +user_pref("browser.download.useDownloadDir", false); +// ------------------------------------- +// Disable adding downloads to the system's "recent documents" list ***/ +user_pref("browser.download.manager.addToRecentDocs", false); +// ------------------------------------- +// Disable hiding mime types (Options>General>Applications) not associated with a plugin ***/ +user_pref("browser.download.hide_plugins_without_extensions", false); +// ------------------------------------- +// 2654: disable "open with" in download dialog [FF50+] [SETUP-HARDEN] +// This is very useful to enable when the browser is sandboxed (e.g. via AppArmor) +// in such a way that it is forbidden to run external applications. +// [WARNING] This may interfere with some users' workflow or methods +// https://bugzilla.mozilla.org/1281959 ***/ +// user_pref("browser.download.forbid_open_with", true); +// >>>>>>>>>>>>>>>>>>>>> +// EXTENSIONS ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Lock down allowed extension directories +// [SETUP-CHROME] This will break extensions, language packs, themes and any other +// XPI files which are installed outside of profile and application directories +// https://mike.kaply.com/2012/02/21/understanding-add-on-scopes/ +// archived: https://archive.is/DYjAM ***/ +user_pref("extensions.enabledScopes", 5); // [HIDDEN PREF] +user_pref("extensions.autoDisableScopes", 15); // [DEFAULT: 15] +// ------------------------------------- +// Disable webextension restrictions on certain mozilla domains [FF60+] +// https://bugzilla.mozilla.org/buglist.cgi?bug_id=1384330,1406795,1415644,1453988 ***/ +// user_pref("extensions.webextensions.restrictedDomains", ""); +// >>>>>>>>>>>>>>>>>>>>> +// SECURITY ***/ +// >>>>>>>>>>>>>>>>>>>>> +// Enforce CSP (Content Security Policy) +// [WARNING] CSP is a very important and widespread security feature. Don't disable it! +// https://developer.mozilla.org/docs/Web/HTTP/CSP ***/ +user_pref("security.csp.enable", true); // [DEFAULT: true] +// ------------------------------------- +// Enforce a security delay on some confirmation dialogs such as install, open/save +// https://www.squarefree.com/2004/07/01/race-conditions-in-security-dialogs/ ***/ +user_pref("security.dialog_enable_delay", 700); +// >>>>>>>>>>>>>>>>>>>>> +// PERSISTENT STORAGE +// >>>>>>>>>>>>>>>>>>>>> +// Disable 3rd-party cookies and site-data [SETUP-WEB] +// 0=Accept cookies and site data, 1=(Block) All third-party cookies, 2=(Block) All cookies, +// 3=(Block) Cookies from unvisited websites, 4=(Block) Cross-site and social media trackers (default) +// [NOTE] You can set exceptions under site permissions or use an extension +// [NOTE] Enforcing category to custom ensures ETP related prefs are always honored +// [SETTING] Privacy & Security>Enhanced Tracking Protection>Custom>Cookies ***/ +user_pref("network.cookie.cookieBehavior", 1); +user_pref("browser.contentblocking.category", "custom"); +// ------------------------------------- +// Set third-party cookies (i.e ALL) (if enabled) to session-only +// [NOTE] .sessionOnly overrides .nonsecureSessionOnly except when .sessionOnly=false and +// .nonsecureSessionOnly=true. This allows you to keep HTTPS cookies, but session-only HTTP ones +// https://feeding.cloud.geek.nz/posts/tweaking-cookies-for-privacy-in-firefox/ ***/ +user_pref("network.cookie.thirdparty.sessionOnly", true); +user_pref("network.cookie.thirdparty.nonsecureSessionOnly", true); // [FF58+] +// ------------------------------------- +// Delete cookies and site data on close +// 0=keep until they expire (default), 2=keep until you close Firefox +// [NOTE] The setting below is disabled (but not changed) if you block all cookies +// [SETTING] Privacy & Security>Cookies and Site Data>Delete cookies and site data when Firefox is closed ***/ +user_pref("network.cookie.lifetimePolicy", 2); +// ------------------------------------- +// Disable DOM (Document Object Model) Storage +// [WARNING] This will break a LOT of sites' functionality AND extensions! +// You are better off using an extension for more granular control ***/ +// user_pref("dom.storage.enabled", false); +// ------------------------------------- +// Disable offline cache ***/ +user_pref("browser.cache.offline.enable", false); +// ------------------------------------- +// Disable service worker cache and cache storage +// [NOTE] We clear service worker cache on exiting Firefox +// https://w3c.github.io/ServiceWorker/#privacy ***/ +// user_pref("dom.caches.enabled", false); +// ------------------------------------- +// Disable Storage API [FF51+] +// The API gives sites the ability to find out how much space they can use, how much +// they are already using, and even control whether or not they need to be alerted +// before the user agent disposes of site data in order to make room for other things. +// https://developer.mozilla.org/docs/Web/API/StorageManager +// https://developer.mozilla.org/docs/Web/API/Storage_API +// https://blog.mozilla.org/l10n/2017/03/07/firefox-l10n-report-aurora-54/ ***/ +// user_pref("dom.storageManager.enabled", false); +// ------------------------------------- +// Disable Storage Access API [FF65+] +// https://developer.mozilla.org/en-US/docs/Web/API/Storage_Access_API ***/ +// user_pref("dom.storage_access.enabled", false); +// >>>>>>>>>>>>>>>>>>>>> +// SHUTDOWN +// >>>>>>>>>>>>>>>>>>>>> +// Enable Firefox to clear items on shutdown +// [SETTING] Privacy & Security>History>Custom Settings>Clear history when Firefox closes ***/ +user_pref("privacy.sanitize.sanitizeOnShutdown", true); +// ------------------------------------- +// Set what items to clear on shutdown [SETUP-CHROME] +// [NOTE] If 'history' is true, downloads will also be cleared regardless of the value +// but if 'history' is false, downloads can still be cleared independently +// However, this may not always be the case. The interface combines and syncs these +// prefs when set from there, and the sanitize code may change at any time +// [SETTING] Privacy & Security>History>Custom Settings>Clear history when Firefox closes>Settings ***/ +user_pref("privacy.clearOnShutdown.cache", true); +user_pref("privacy.clearOnShutdown.cookies", true); +user_pref("privacy.clearOnShutdown.downloads", true); // see note above +user_pref("privacy.clearOnShutdown.formdata", true); // Form & Search History +user_pref("privacy.clearOnShutdown.history", true); // Browsing & Download History +user_pref("privacy.clearOnShutdown.offlineApps", true); // Offline Website Data +user_pref("privacy.clearOnShutdown.sessions", true); // Active Logins +user_pref("privacy.clearOnShutdown.siteSettings", true); // Site Preferences +// ------------------------------------- +// Reset default items to clear with Ctrl-Shift-Del [SETUP-CHROME] +// This dialog can also be accessed from the menu History>Clear Recent History +// Firefox remembers your last choices. This will reset them when you start Firefox. +// [NOTE] Regardless of what you set privacy.cpd.downloads to, as soon as the dialog +// for "Clear Recent History" is opened, it is synced to the same as 'history' ***/ +user_pref("privacy.cpd.cache", true); +user_pref("privacy.cpd.cookies", true); +// user_pref("privacy.cpd.downloads", true); // not used, see note above +user_pref("privacy.cpd.formdata", true); // Form & Search History +user_pref("privacy.cpd.history", true); // Browsing & Download History +user_pref("privacy.cpd.offlineApps", true); // Offline Website Data +user_pref("privacy.cpd.passwords", false); // this is not listed +user_pref("privacy.cpd.sessions", true); // Active Logins +user_pref("privacy.cpd.siteSettings", false); // Site Preferences +// ------------------------------------- +// Clear Session Restore data when sanitizing on shutdown or manually [FF34+] +// [NOTE] Not needed if Session Restore is not used or is already cleared with history +// [NOTE] privacy.clearOnShutdown.openWindows prevents resuming from crashes +// [NOTE] privacy.cpd.openWindows has a bug that causes an additional window to open ***/ +// user_pref("privacy.clearOnShutdown.openWindows", true); +// user_pref("privacy.cpd.openWindows", true); +// ------------------------------------- +// Reset default 'Time range to clear' for 'Clear Recent History' +// Firefox remembers your last choice. This will reset the value when you start Firefox. +// 0=everything, 1=last hour, 2=last two hours, 3=last four hours, +// 4=today, 5=last five minutes, 6=last twenty-four hours +// [NOTE] The values 5 + 6 are not listed in the dropdown, which will display a +// blank value if they are used, but they do work as advertised ***/ +user_pref("privacy.sanitize.timeSpan", 0); +// >>>>>>>>>>>>>>>>>>>>> +// FPI (FIRST PARTY ISOLATION) +// >>>>>>>>>>>>>>>>>>>>> +// Enable First Party Isolation [FF51+] +// [SETUP-WEB] May break cross-domain logins and site functionality until perfected +// https://bugzilla.mozilla.org/1260931 +// https://bugzilla.mozilla.org/1299996 [META] ***/ +user_pref("privacy.firstparty.isolate", true); +// ------------------------------------- +// Enforce FPI restriction for window.opener [FF54+] +// [NOTE] Setting this to false may reduce the breakage +// FF65+ blocks postMessage with targetOrigin "*" if originAttributes don't match. But +// to reduce breakage it ignores the 1st-party domain (FPD) originAttribute +// The 2nd pref removes that limitation and will only allow communication if FPDs also match. +// https://bugzilla.mozilla.org/1319773#c22 +// https://bugzilla.mozilla.org/1492607 +// https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage ***/ +// user_pref("privacy.firstparty.isolate.restrict_opener_access", true); // [DEFAULT: true] +// user_pref("privacy.firstparty.isolate.block_post_message", true); +// ------------------------------------- +// Enable site partitioning (FF78+) +// https://bugzilla.mozilla.org/1590107 [META] */ +user_pref("privacy.partition.network_state", true); +// >>>>>>>>>>>>>>>>>>>>> +// RFP (RESIST FINGERPRINTING) +// >>>>>>>>>>>>>>>>>>>>> +// Enable privacy.resistFingerprinting [FF41+] +// This pref is the master switch for all other privacy.resist* prefs unless stated +// [SETUP-WEB] RFP can cause the odd website to break in strange ways, and has a few side affects, +// but is largely robust nowadays. Give it a try. Your choice. +// https://bugzilla.mozilla.org/418986 ***/ +user_pref("privacy.resistFingerprinting", true); +// ------------------------------------- +// Set new window sizes to round to hundreds [FF55+] [SETUP-CHROME] +// Width will round down to multiples of 200s and height to 100s, to fit your screen. +// The override values are a starting point to round from if you want some control +// https://bugzilla.mozilla.org/1330882 +// https://hardware.metrics.mozilla.com/ ***/ +// user_pref("privacy.window.maxInnerWidth", 1000); +// user_pref("privacy.window.maxInnerHeight", 1000); +// ------------------------------------- +// Disable mozAddonManager Web API [FF57+] +// [NOTE] As a side-effect in FF57-59 this allowed extensions to work on AMO. In FF60+ you also need +// to sanitize or clear extensions.webextensions.restrictedDomains to keep that side-effect +// https://bugzilla.mozilla.org/buglist.cgi?bug_id=1384330,1406795,1415644,1453988 ***/ +user_pref("privacy.resistFingerprinting.block_mozAddonManager", true); // [HIDDEN PREF] +// ------------------------------------- +// Enable RFP letterboxing [FF67+] +// Dynamically resizes the inner window by applying margins in stepped ranges +// If you use the dimension pref, then it will only apply those resolutions. The format is +// "width1xheight1, width2xheight2, ..." (e.g. "800x600, 1000x1000, 1600x900") +// [WARNING] The dimension pref is only meant for testing, and we recommend you DO NOT USE it +// https://bugzilla.mozilla.org/1407366 +// https://hg.mozilla.org/mozilla-central/rev/6d2d7856e468#l2.32 ***/ +// user_pref("privacy.resistFingerprinting.letterboxing", true); // [HIDDEN PREF] +// user_pref("privacy.resistFingerprinting.letterboxing.dimensions", ""); // [HIDDEN PREF] +// ------------------------------------- +// Disable showing about:blank as soon as possible during startup [FF60+] +// When default true this no longer masks the RFP chrome resizing activity +// https://bugzilla.mozilla.org/1448423 ***/ +user_pref("browser.startup.blankWindow", false); +// ------------------------------------- +// Disable chrome animations [FF77+] [RESTART] +// [NOTE] pref added in FF63, but applied to chrome in FF77. RFP spoofs this for web content ***/ +user_pref("ui.prefersReducedMotion", 1); // [HIDDEN PREF] +// >>>>>>>>>>>>>>>>>>>>> +// RFP ALTERNATIVES +// >>>>>>>>>>>>>>>>>>>>> +// Spoof (or limit?) number of CPU cores [FF48+] +// [NOTE] *may* affect core chrome/Firefox performance, will affect content. +// https://bugzilla.mozilla.org/1008453 +// https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/21675 +// https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/22127 +// https://html.spec.whatwg.org/multipage/workers.html#navigator.hardwareconcurrency +// user_pref("dom.maxHardwareConcurrency", 2); +// ------------------------------------- +// Disable resource/navigation timing +user_pref("dom.enable_resource_timing", false); +// ------------------------------------- +// Disable timing attacks +// https://wiki.mozilla.org/Security/Reviews/Firefox/NavigationTimingAPI +user_pref("dom.enable_performance", false); +// ------------------------------------- +// Disable device sensor API +// Optional protection depending on your device +// [1] https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/15758 +// [2] https://blog.lukaszolejnik.com/stealing-sensitive-browser-data-with-the-w3c-ambient-light-sensor-api/ +// [3] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1357733,1292751 +user_pref("device.sensors.enabled", false); +// ------------------------------------- +// Disable site specific zoom +// Zoom levels affect screen res and are highly fingerprintable. This does not stop you using +// zoom, it will just not use/remember any site specific settings. Zoom levels on new tabs +// and new windows are reset to default and only the current tab retains the current zoom +user_pref("browser.zoom.siteSpecific", false); +// ------------------------------------- +// Disable gamepad API - USB device ID enumeration +// Optional protection depending on your connected devices +// https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/13023 +// user_pref("dom.gamepad.enabled", false); +// ------------------------------------- +// Disable giving away network info [FF31+] +// e.g. bluetooth, cellular, ethernet, wifi, wimax, other, mixed, unknown, none +// https://developer.mozilla.org/docs/Web/API/Network_Information_API +// https://wicg.github.io/netinfo/ +// https://bugzilla.mozilla.org/960426 +user_pref("dom.netinfo.enabled", false); // [DEFAULT: true on Android] +// ------------------------------------- +// Disable the SpeechSynthesis (Text-to-Speech) part of the Web Speech API +// https://developer.mozilla.org/docs/Web/API/Web_Speech_API +// https://developer.mozilla.org/docs/Web/API/SpeechSynthesis +// https://wiki.mozilla.org/HTML5_Speech_API +user_pref("media.webspeech.synth.enabled", false); +// ------------------------------------- +// Disable video statistics - JS performance fingerprinting [FF25+] +// https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/15757 +// https://bugzilla.mozilla.org/654550 +user_pref("media.video_stats.enabled", false); +// ------------------------------------- +// Disable touch events +// fingerprinting attack vector - leaks screen res & actual screen coordinates +// 0=disabled, 1=enabled, 2=autodetect +// Optional protection depending on your device +// https://developer.mozilla.org/docs/Web/API/Touch_events +// https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/10286 +// user_pref("dom.w3c_touch_events.enabled", 0); +// ------------------------------------- +// Disable MediaDevices change detection [FF51+] +// https://developer.mozilla.org/docs/Web/Events/devicechange +// https://developer.mozilla.org/docs/Web/API/MediaDevices/ondevicechange +user_pref("media.ondevicechange.enabled", false); +// ------------------------------------- +// Disable WebGL debug info being available to websites +// https://bugzilla.mozilla.org/1171228 +// https://developer.mozilla.org/docs/Web/API/WEBGL_debug_renderer_info +user_pref("webgl.enable-debug-renderer-info", false); +// ------------------------------------- +// Enforce prefers-reduced-motion as no-preference [FF63+] [RESTART] +// 0=no-preference, 1=reduce +user_pref("ui.prefersReducedMotion", 0); // [HIDDEN PREF] +// ------------------------------------- +// Disable PointerEvents +// https://developer.mozilla.org/en-US/docs/Web/API/PointerEvent +user_pref("dom.w3c_pointer_events.enabled", false); +// ------------------------------------- +// Disable exposure of system colors to CSS or canvas [FF44+] +// [NOTE] See second listed bug: may cause black on black for elements with undefined colors +// [SETUP-CHROME] Might affect CSS in themes and extensions +// https://bugzilla.mozilla.org/buglist.cgi?bug_id=232227,1330876 +user_pref("ui.use_standins_for_native_colors", true); +// ------------------------------------- +// Enforce prefers-color-scheme as light [FF67+] +// 0=light, 1=dark : This overrides your OS value +user_pref("ui.systemUsesDarkTheme", 0); // [HIDDEN PREF] +// ------------------------------------- +// Limit font visbility (non-ANDROID) [FF79+] +// Uses hardcoded lists with two parts: kBaseFonts + kLangPackFonts +// 1=only base system fonts, 2=also fonts from optional language packs, 3=also user-installed fonts +// [NOTE] Bundled fonts are auto-allowed +// https://searchfox.org/mozilla-central/search?path=StandardFonts*.inc +user_pref("layout.css.font-visibility.level", 1); +// >>>>>>>>>>>>>>>>>>>>> +// RFP ALTERNATIVES (NAVIGATOR / USER AGENT SPOOFING) +// >>>>>>>>>>>>>>>>>>>>> +// Navigator DOM object overrides +// [WARNING] DO NOT USE ***/ +// user_pref("general.appname.override", ""); // [HIDDEN PREF] +// user_pref("general.appversion.override", ""); // [HIDDEN PREF] +// user_pref("general.buildID.override", ""); // [HIDDEN PREF] +// user_pref("general.oscpu.override", ""); // [HIDDEN PREF] +// user_pref("general.platform.override", ""); // [HIDDEN PREF] +// user_pref("general.useragent.override", ""); // [HIDDEN PREF] +// >>>>>>>>>>>>>>>>>>>>> +// PERSONAL +// >>>>>>>>>>>>>>>>>>>>> +user_pref("browser.startup.homepage_override.mstone", "ignore"); // master switch +user_pref("startup.homepage_welcome_url", ""); +user_pref("startup.homepage_welcome_url.additional", ""); +user_pref("startup.homepage_override_url", ""); // What's New page after updates +// >>>>>>>>>>>>>>>>>>>>> +// WARNINGS ***/ +// >>>>>>>>>>>>>>>>>>>>> +user_pref("browser.tabs.warnOnClose", false); +// user_pref("browser.tabs.warnOnCloseOtherTabs", false); +// user_pref("browser.tabs.warnOnOpen", false); +// user_pref("full-screen-api.warning.delay", 0); +// user_pref("full-screen-api.warning.timeout", 0); +// >>>>>>>>>>>>>>>>>>>>> +// APPEARANCE ***/ +// >>>>>>>>>>>>>>>>>>>>> +// user_pref("browser.download.autohideButton", false); // [FF57+] +// user_pref("toolkit.legacyUserProfileCustomizations.stylesheets", true); // [FF68+] allow userChrome/userContent +// >>>>>>>>>>>>>>>>>>>>> +// CONTENT BEHAVIOR ***/ +// >>>>>>>>>>>>>>>>>>>>> +user_pref("accessibility.typeaheadfind", false); // enable "Find As You Type" +user_pref("clipboard.autocopy", false); // disable autocopy default [LINUX] +user_pref("layout.spellcheckDefault", 0); // 0=none, 1-multi-line, 2=multi-line & single-line +// >>>>>>>>>>>>>>>>>>>>> +// UX BEHAVIOR ***/ +// >>>>>>>>>>>>>>>>>>>>> +// user_pref("browser.backspace_action", 2); // 0=previous page, 1=scroll up, 2=do nothing +// user_pref("browser.tabs.closeWindowWithLastTab", false); +// user_pref("browser.tabs.loadBookmarksInTabs", true); // open bookmarks in a new tab [FF57+] +// user_pref("browser.urlbar.decodeURLsOnCopy", true); // see bugzilla 1320061 [FF53+] +// user_pref("general.autoScroll", false); // middle-click enabling auto-scrolling [DEFAULT: false on Linux] +// user_pref("ui.key.menuAccessKey", 0); // disable alt key toggling the menu bar [RESTART] +// user_pref("view_source.tab", false); // view "page/selection source" in a new window [FF68+, FF59 and under] +// >>>>>>>>>>>>>>>>>>>>> +// UX FEATURES: disable and hide the icons and menus ***/ +// >>>>>>>>>>>>>>>>>>>>> +user_pref("browser.messaging-system.whatsNewPanel.enabled", false); // What's New [FF69+] +user_pref("messaging-system.rsexperimentloader.enabled", false); +user_pref("extensions.pocket.enabled", false); // Pocket Account [FF46+] +user_pref("identity.fxaccounts.enabled", false); // Firefox Accounts & Sync [FF60+] [RESTART] +user_pref("reader.parse-on-load.enabled", false); // Reader View +// >>>>>>>>>>>>>>>>>>>>> +// OTHER ***/ +// user_pref("browser.bookmarks.max_backups", 2); +user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons", false); // disable CFR [FF67+] +user_pref("browser.newtabpage.activity-stream.improvesearch.topSiteSearchShortcuts.searchEngines" ""); +// [SETTING] General>Browsing>Recommend extensions as you browse +user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features", false); // disable CFR [FF67+] +// [SETTING] General>Browsing>Recommend features as you browse +user_pref("network.manage-offline-status", false); // see bugzilla 620472 +// user_pref("xpinstall.signatures.required", false); // enforced extension signing (Nightly/ESR) +// >>>>>>>>>>>>>>>>>>>>> +// DEPRECATED / REMOVED / LEGACY / RENAMED +// >>>>>>>>>>>>>>>>>>>>> +// ESR78.x still uses all the following prefs +// [NOTE] replace the * with a slash in the line above to re-enable them +// FF79 +// 0212: enforce fallback text encoding to match en-US +// When the content or server doesn't declare a charset the browser will +// fallback to the "Current locale" based on your application language +// [TEST] https://hsivonen.com/test/moz/check-charset.htm +// https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/20025 +// https://bugzilla.mozilla.org/1603712 +user_pref("intl.charset.fallback.override", "windows-1252"); +// FF82 +// Disable geographically specific results/search engines e.g. "browser.search.*.US" +// i.e. ignore all of Mozilla's various search engines in multiple locales +// https://bugzilla.mozilla.org/1619926 +user_pref("browser.search.geoSpecificDefaults", false); +user_pref("browser.search.geoSpecificDefaults.url", ""); +// >>>>>>>>>>>>>>>>>>>>> +// \ No newline at end of file