// ********************************************************************************** // user.js | Firefox desktop // https://git.nixnet.services/Narsil/desktop_user.js // ********************************************************************************** // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // START: internal custom pref to test for syntax error // >>>>>>>>>>>>>>>>>>>>> // // Disable about:config warning user_pref("browser.aboutConfig.showWarning", false); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // STARTUP // >>>>>>>>>>>>>>>>>>>>> // // Disable default browser check user_pref("browser.shell.checkDefaultBrowser", false); // ------------------------------------- // Set startup page // 0=blank, 1=home, 2=last visited page, 3=resume previous session user_pref("browser.startup.page", 1); // ------------------------------------- // Set HOME+NEWWINDOW page user_pref("browser.startup.homepage", "about:home"); // ------------------------------------- // Set NEWTAB page // true=Activity Stream (default), false=blank page // user_pref("browser.newtabpage.enabled", false); // ------------------------------------- // Disable sponsored content on Firefox Home (Activity Stream) user_pref("browser.newtabpage.activity-stream.showSponsored", false); // [FF58+] user_pref("browser.newtabpage.activity-stream.showSponsoredTopSites", false); // [FF83+] Shortcuts>Sponsored shortcuts // ------------------------------------- // Clear default topsites user_pref("browser.newtabpage.activity-stream.default.sites", "https://www.youtube.com/,https://comick.io/,https://mullvad.net/check/"); user_pref("browser.topsites.contile.enabled", false); user_pref("browser.topsites.useRemoteSetting", false); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // GEOLOCATION // >>>>>>>>>>>>>>>>>>>>> // // Use Mozilla geolocation service instead of Google if permission is granted [FF74+] 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] //CUSTOM-C user_pref("geo.provider.use_corelocation", false); // [MAC] // user_pref("geo.provider.use_gpsd", false); // [LINUX] [HIDDEN PREF] //CUSTOM-C // user_pref("geo.provider.geoclue.always_high_accuracy", false); // [LINUX] //CUSTOM-C // user_pref("geo.provider.use_geoclue", false); // [FF102+] [LINUX] //CUSTOM-C // ------------------------------------- // Disable region updates user_pref("browser.region.network.url", ""); // [FF78+] Defense-in-depth user_pref("browser.region.update.enabled", false); // [FF79+] // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // QUIETER FOX // >>>>>>>>>>>>>>>>>>>>> // // RECOMMENDATIONS // // Disable recommendation pane in about:addons (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 personalized Extension Recommendations in about:addons and AMO [FF65+] user_pref("browser.discovery.enabled", false); // ------------------------------------- // Disable shopping experience [FF116+] user_pref("browser.shopping.experience2023.enabled", false); // [DEFAULT: false] user_pref("browser.shopping.experience2023.opted", 2); user_pref("browser.shopping.experience2023.active", false); // // TELEMETRY // // Disable new data submission [FF41+] user_pref("datareporting.policy.dataSubmissionEnabled", false); // ------------------------------------- // Disable Health Reports user_pref("datareporting.healthreport.uploadEnabled", false); // ------------------------------------- // Disable telemetry user_pref("toolkit.telemetry.unified", false); user_pref("toolkit.telemetry.enabled", false); // see [NOTE] 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+] user_pref("browser.search.serpEventTelemetry.enabled",false); // ------------------------------------- // Skip checking omni.ja and other files user_pref("corroborator.enabled", false); // ------------------------------------- // Disable Telemetry Coverage 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 Firefox Home (Activity Stream) telemetry user_pref("browser.newtabpage.activity-stream.feeds.telemetry", false); user_pref("browser.newtabpage.activity-stream.telemetry", false); // ------------------------------------- // Disable WebVTT logging and test events user_pref("media.webvtt.debug.logging", false); user_pref("media.webvtt.testing.events", false); // ------------------------------------- // Disable send content blocking log to about:protections user_pref("browser.contentblocking.database.enabled", false); // ------------------------------------- // Disable celebrating milestone toast when certain numbers of trackers are blocked user_pref("browser.contentblocking.cfr-milestone.enabled", false); // ------------------------------------- // Disable Default Browser Agent // user_pref("default-browser-agent.enabled", false); // [WINDOWS] //CUSTOM-C // // STUDIES // // Disable Studies user_pref("app.shield.optoutstudies.enabled", false); // ------------------------------------- // Disable Normandy/Shield [FF60+] user_pref("app.normandy.enabled", false); user_pref("app.normandy.api_url", ""); // // CRASH REPORTS // // Disable Crash Reports user_pref("breakpad.reportURL", ""); user_pref("browser.tabs.crashReporting.sendReport", false); // [FF44+] // user_pref("browser.crashReports.unsubmittedCheck.enabled", false); // [FF51+] [DEFAULT: false] // ------------------------------------- // Enforce no submission of backlogged Crash Reports [FF58+] user_pref("browser.crashReports.unsubmittedCheck.autoSubmit2", false); // [DEFAULT: false] // // OTHER // // Disable Captive Portal detection user_pref("captivedetect.canonicalURL", ""); user_pref("network.captive-portal-service.enabled", false); // [FF52+] // ------------------------------------- // Disable Network Connectivity checks [FF65+] user_pref("network.connectivity-service.enabled", false); // ------------------------------------- // Disable contentblocking reports user_pref("browser.contentblocking.reportBreakage.url", ""); user_pref("browser.contentblocking.report.cookie.url", ""); user_pref("browser.contentblocking.report.cryptominer.url", ""); user_pref("browser.contentblocking.report.fingerprinter.url", ""); user_pref("browser.contentblocking.report.lockwise.enabled", false); user_pref("browser.contentblocking.report.lockwise.how_it_works.url", ""); user_pref("browser.contentblocking.report.manage_devices.url", ""); user_pref("browser.contentblocking.report.monitor.enabled", false); user_pref("browser.contentblocking.report.monitor.how_it_works.url", ""); user_pref("browser.contentblocking.report.monitor.sign_in_url", ""); user_pref("browser.contentblocking.report.monitor.url", ""); user_pref("browser.contentblocking.report.proxy.enabled", false); user_pref("browser.contentblocking.report.proxy_extension.url", ""); user_pref("browser.contentblocking.report.social.url", ""); user_pref("browser.contentblocking.report.tracker.url", ""); user_pref("browser.contentblocking.report.endpoint_url", ""); user_pref("browser.contentblocking.report.monitor.home_page_url", ""); user_pref("browser.contentblocking.report.monitor.preferences_url", ""); user_pref("browser.contentblocking.report.vpn.enabled", false); user_pref("browser.contentblocking.report.hide_vpn_banner", true); user_pref("browser.contentblocking.report.show_mobile_app", false); user_pref("browser.vpn_promo.enabled", false); user_pref("browser.promo.focus.enabled", false); // ------------------------------------- // Block unwanted connections user_pref("app.feedback.baseURL", ""); user_pref("app.support.baseURL", ""); user_pref("app.releaseNotesURL", ""); user_pref("app.update.url.details", ""); user_pref("app.update.url.manual", ""); user_pref("app.update.staging.enabled", false); // ------------------------------------- // Remove default handlers and translation engine user_pref("gecko.handlerService.schemes.mailto.0.uriTemplate", ""); user_pref("gecko.handlerService.schemes.mailto.0.name", ""); user_pref("gecko.handlerService.schemes.mailto.1.uriTemplate", ""); user_pref("gecko.handlerService.schemes.mailto.1.name", ""); user_pref("gecko.handlerService.schemes.irc.0.uriTemplate", ""); user_pref("gecko.handlerService.schemes.irc.0.name", ""); user_pref("gecko.handlerService.schemes.ircs.0.uriTemplate", ""); user_pref("gecko.handlerService.schemes.ircs.0.name", ""); user_pref("browser.translation.engine", ""); // ------------------------------------- // Disable connections to Mozilla servers user_pref("services.settings.server", ""); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // SAFE BROWSING (SB) // >>>>>>>>>>>>>>>>>>>>> // // Disable SB (Safe Browsing) user_pref("browser.safebrowsing.malware.enabled", false); user_pref("browser.safebrowsing.phishing.enabled", false); user_pref("browser.safebrowsing.passwords.enabled", false); user_pref("browser.safebrowsing.allowOverride", false); // ------------------------------------- // Disable SB checks for downloads (both local lookups + remote) user_pref("browser.safebrowsing.downloads.enabled", false); // ------------------------------------- // Disable SB checks for downloads (remote) user_pref("browser.safebrowsing.downloads.remote.enabled", false); user_pref("browser.safebrowsing.downloads.remote.url", ""); // ------------------------------------- // Disable SB checks for unwanted 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 [FF45+] // 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.advisoryURL", ""); 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", ""); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // BLOCK IMPLICIT OUTBOUND // >>>>>>>>>>>>>>>>>>>>> // // Disable link prefetching user_pref("network.prefetch-next", false); // ------------------------------------- // Disable DNS prefetching user_pref("network.dns.disablePrefetch", true); user_pref("network.dns.disablePrefetchFromHTTPS", true); // ------------------------------------- // Disable predictor / prefetching user_pref("network.predictor.enabled", false); user_pref("network.predictor.enable-prefetch", false); // [FF48+] [DEFAULT: false] // ------------------------------------- // Disable link-mouseover opening connection to linked server user_pref("network.http.speculative-parallel-limit", 0); // ------------------------------------- // Disable mousedown speculative connections on bookmarks and history [FF98+] user_pref("browser.places.speculativeConnect.enabled", false); // ------------------------------------- // Enforce no "Hyperlink Auditing" (click tracking) // user_pref("browser.send_pings", false); // [DEFAULT: false] // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // DNS / DoH / PROXY / SOCKS // >>>>>>>>>>>>>>>>>>>>> // // Set the proxy server to do any DNS lookups when using SOCKS user_pref("network.proxy.socks_remote_dns", true); // ------------------------------------- // Disable using UNC (Uniform Naming Convention) paths [FF61+] user_pref("network.file.disable_unc_paths", true); // [HIDDEN PREF] // ------------------------------------- // Disable GIO as a potential proxy bypass vector user_pref("network.gio.supported-protocols", ""); // [HIDDEN PREF] [DEFAULT: "" FF118+] // ------------------------------------- // Disable proxy direct failover for system requests [FF91+] // user_pref("network.proxy.failover_direct", false); // ------------------------------------- // Disable proxy bypass for system request failures [FF95+] // user_pref("network.proxy.allow_bypass", false); // ------------------------------------- // Disable DNS-over-HTTPS (DoH)[FF60+] //CUSTOM-C user_pref("network.trr.mode", 3); user_pref("network.trr.confirmationNS", ""); // ------------------------------------- // Disable skipping DoH when parental controls are enabled //CUSTOM-C user_pref("network.trr.uri", "https://dns.mullvad.net/dns-query"); user_pref("network.trr.custom_uri", "https://dns.mullvad.net/dns-query"); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // LOCATION BAR / SEARCH BAR / SUGGESTIONS / HISTORY / FORMS // >>>>>>>>>>>>>>>>>>>>> // // Disable location bar making speculative connections [FF56+] user_pref("browser.urlbar.speculativeConnect.enabled", false); // ------------------------------------- // Disable location bar contextual suggestions user_pref("browser.urlbar.quicksuggest.enabled", false); // [FF92+] user_pref("browser.urlbar.suggest.quicksuggest.nonsponsored", false); // [FF95+] user_pref("browser.urlbar.suggest.quicksuggest.sponsored", false); // [FF92+] // ------------------------------------- // Disable live search suggestions user_pref("browser.search.suggest.enabled", false); user_pref("browser.urlbar.suggest.searches", false); // ------------------------------------- // Disable urlbar trending search suggestions [FF118+] user_pref("browser.urlbar.trending.featureGate", false); // ------------------------------------- // Disable urlbar suggestions user_pref("browser.urlbar.addons.featureGate", false); // [FF115+] user_pref("browser.urlbar.mdn.featureGate", false); // [FF117+] [HIDDEN PREF] user_pref("browser.urlbar.pocket.featureGate", false); // [FF116+] [DEFAULT: false] user_pref("browser.urlbar.weather.featureGate", false); // [FF108+] [DEFAULT: false] user_pref("browser.urlbar.yelp.featureGate", false); // [FF124+] [DEFAULT: false] // ------------------------------------- // Disable urlbar clipboard suggestions [FF118+] user_pref("browser.urlbar.clipboard.featureGate", false); // ------------------------------------- // Disable recent searches [FF120+] user_pref("browser.urlbar.recentsearches.featureGate", false); // ------------------------------------- // Disable search and form history user_pref("browser.formfill.enable", false); // ------------------------------------- // Disable tab-to-search [FF85+] user_pref("browser.urlbar.suggest.engines", false); // ------------------------------------- // Disable coloring of visited links user_pref("layout.css.visited_links_enabled", false); // ------------------------------------- // Enable separate default search engine in Private Windows and its UI setting user_pref("browser.search.separatePrivateDefault", true); // [FF70+] user_pref("browser.search.separatePrivateDefault.ui.enabled", true); // [FF71+] // ------------------------------------- // Disable merino user_pref("browser.urlbar.merino.enabled", false); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // PASSWORDS // >>>>>>>>>>>>>>>>>>>>> // // Disable saving passwords and password alerts. 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", ""); // ------------------------------------- // Set when Firefox should prompt for the primary password // 0=once per session (default), 1=every time it's needed, 2=after n minutes user_pref("security.ask_for_password", 2); // ------------------------------------- // Set how long in minutes Firefox should remember the primary password (0901) user_pref("security.password_lifetime", 5); // [DEFAULT: 30] // ------------------------------------- // Disable auto-filling username & password form fields 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+] // 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); // ------------------------------------- // Enforce no automatic authentication on Microsoft sites [FF91+] [WINDOWS 10+] // user_pref("network.http.windows-sso.enabled", false); // [DEFAULT: false] // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // DISK AVOIDANCE // >>>>>>>>>>>>>>>>>>>>> // // Disable disk cache user_pref("browser.cache.disk.enable", false); // ------------------------------------- // Disable media cache from writing to disk in Private Browsing user_pref("browser.privatebrowsing.forceMediaMemoryCache", true); // [FF75+] user_pref("media.memory_cache_max_size", 65536); // ------------------------------------- // Disable storing extra session data // 0=everywhere, 1=unencrypted sites, 2=nowhere user_pref("browser.sessionstore.privacy_level", 2); // ------------------------------------- // Disable automatic Firefox start and session restore after reboot [FF62+] [WINDOWS] //CUSTOM-C // user_pref("toolkit.winRegisterApplicationRestart", false); // ------------------------------------- // Disable favicons in shortcuts [WINDOWS] user_pref("browser.shell.shortcutFavicons", false); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // HTTPS (SSL/TLS / OCSP / CERTS / HPKP) // >>>>>>>>>>>>>>>>>>>>> // // Require safe negotiation user_pref("security.ssl.require_safe_negotiation", true); // ------------------------------------- // Disable TLS1.3 0-RTT (round-trip time) [FF51+] user_pref("security.tls.enable_0rtt_data", false); // // OCSP (Online Certificate Status Protocol) // // Enforce OCSP fetching to confirm current validity of certificates // 0=disabled, 1=enabled (default), 2=enabled for EV certificates only user_pref("security.OCSP.enabled", 0); // [DEFAULT: 1] // ------------------------------------- // Set OCSP fetch failures (non-stapled) to hard-fail [SETUP-WEB] user_pref("security.OCSP.require", false); // // CERTS / HPKP (HTTP Public Key Pinning) // // Enable strict PKP (Public Key Pinning) // 0=disabled, 1=allow user MiTM (default; such as your antivirus), 2=strict user_pref("security.cert_pinning.enforcement_level", 2); // ------------------------------------- // Disable CRLite [FF73+] // 0 = disabled // 1 = consult CRLite but only collect telemetry (default) // 2 = consult CRLite and enforce both "Revoked" and "Not Revoked" results // 3 = consult CRLite and enforce "Not Revoked" results, but defer to OCSP for "Revoked" (default) user_pref("security.remote_settings.intermediates.enabled", false); user_pref("security.remote_settings.intermediates.bucket", ""); user_pref("security.remote_settings.intermediates.collection", ""); user_pref("security.remote_settings.intermediates.signer", ""); user_pref("security.remote_settings.crlite_filters.enabled", false); user_pref("security.remote_settings.crlite_filters.bucket", ""); user_pref("security.remote_settings.crlite_filters.collection", ""); user_pref("security.remote_settings.crlite_filters.signer", ""); user_pref("security.pki.crlite_mode", 0); // // MIXED CONTENT // // Disable insecure passive content (such as images) on https pages [SETUP-WEB] // user_pref("security.mixed_content.block_display_content", true); // Defense-in-depth // ------------------------------------- // Enable HTTPS-Only mode in all windows user_pref("dom.security.https_only_mode", true); // [FF76+] // user_pref("dom.security.https_only_mode_pbm", true); // [FF80+] // ------------------------------------- // Enable HTTPS-Only mode for local resources [FF77+] // user_pref("dom.security.https_only_mode.upgrade_local", true); // ------------------------------------- // Disable HTTP background requests [FF82+] user_pref("dom.security.https_only_mode_send_http_background_request", false); // ------------------------------------- // Disable ping to Mozilla for Man-in-the-Middle detection user_pref("security.certerrors.mitm.priming.enabled", false); user_pref("security.certerrors.mitm.priming.endpoint", ""); user_pref("security.pki.mitm_canary_issuer", ""); user_pref("security.pki.mitm_canary_issuer.enabled", false); user_pref("security.pki.mitm_detected", false); // // UI (User Interface) // // Display warning on the padlock for "broken security" user_pref("security.ssl.treat_unsafe_negotiation_as_broken", true); // ------------------------------------- // Display advanced information on Insecure Connection warning pages user_pref("browser.xul.error_pages.expert_bad_cert", true); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // REFERERS // >>>>>>>>>>>>>>>>>>>>> // // Control the amount of cross-origin 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); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // CONTAINERS // >>>>>>>>>>>>>>>>>>>>> // // Enable Container Tabs and its UI setting [FF50+] // user_pref("privacy.userContext.enabled", true); // user_pref("privacy.userContext.ui.enabled", true); // ------------------------------------- // Set behavior on "+ Tab" button to display container menu on left click [FF74+] // user_pref("privacy.userContext.newTabContainerOnLeftClick.enabled", true); // ------------------------------------- // Set external links to open in site-specific containers [FF123+] // user_pref("browser.link.force_default_user_context_id_for_external_opens", true); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // PLUGINS / MEDIA / WEBRTC // >>>>>>>>>>>>>>>>>>>>> // // Force WebRTC inside the proxy [FF70+] user_pref("media.peerconnection.ice.proxy_only_if_behind_proxy", true); // ------------------------------------- // Force a single network interface for ICE candidates generation [FF42+] user_pref("media.peerconnection.ice.default_address_only", true); // ------------------------------------- // Force exclusion of private IPs from ICE candidates [FF51+] // user_pref("media.peerconnection.ice.no_host", true); // ------------------------------------- // Disable GMP (Gecko Media Plugins) user_pref("media.gmp-provider.enabled", false); user_pref("media.gmp-manager.url", ""); user_pref("media.gmp-gmpopenh264.enabled", false); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // DOM (DOCUMENT OBJECT MODEL) // >>>>>>>>>>>>>>>>>>>>> // // Prevent scripts from moving and resizing open windows user_pref("dom.disable_window_move_resize", true); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // MISCELLANEOUS // >>>>>>>>>>>>>>>>>>>>> // // Remove temp files opened from non-PB windows with an external application user_pref("browser.download.start_downloads_in_tmp_dir", true); // [FF102+] // ------------------------------------- // Disable sending additional analytics to web servers user_pref("beacon.enabled", false); // ------------------------------------- // Remove temp files opened with an external application user_pref("browser.helperApps.deleteTempFileOnExit", true); // ------------------------------------- // 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", ""); // Defense-in-depth // ------------------------------------- // Reset remote debugging to disabled user_pref("devtools.debugger.remote-enabled", false); // [DEFAULT: false] // ------------------------------------- // Disable websites overriding Firefox's keyboard shortcuts [FF58+] // 0 (default) or 1=allow, 2=block // user_pref("permissions.default.shortcuts", 2); // ------------------------------------- // Remove special permissions for certain mozilla domains [FF35+] user_pref("permissions.manager.defaultsUrl", ""); // ------------------------------------- // Remove webchannel whitelist user_pref("webchannel.allowObject.urlWhitelist", ""); // ------------------------------------- // Use Punycode in Internationalized Domain Names to eliminate possible spoofing user_pref("network.IDN_show_punycode", true); // ------------------------------------- // Enforce PDFJS, disable PDFJS scripting user_pref("pdfjs.disabled", false); // [DEFAULT: false] user_pref("pdfjs.enableScripting", false); // [FF86+] // ------------------------------------- // Disable middle click on new tab button opening URLs or searches using clipboard [FF115+] user_pref("browser.tabs.searchclipboardfor.middleclick", false); // [DEFAULT: false NON-LINUX] // ------------------------------------- // Disable content analysis by DLP (Data Loss Prevention) agents // 0=Block all requests, 1=Warn on all requests (which lets the user decide), 2=Allow all requests user_pref("browser.contentanalysis.enabled", false); // [FF121+] [DEFAULT: false] user_pref("browser.contentanalysis.default_result", 0); // [FF127+] [DEFAULT: 0] // ------------------------------------- // Disable the default checkedness for "Save card and address to Firefox" checkboxes user_pref("dom.payments.defaults.saveAddress", false); user_pref("dom.payments.defaults.saveCreditCard", false); // ------------------------------------- // Disable Displaying Javascript in History URLs user_pref("browser.urlbar.filter.javascript", true); // // DOWNLOADS // // Enable user interaction for security by always asking where to download user_pref("browser.download.useDownloadDir", false); // ------------------------------------- // Disable downloads panel opening on every download [FF96+] user_pref("browser.download.alwaysOpenPanel", false); // ------------------------------------- // Disable adding downloads to the system's "recent documents" list user_pref("browser.download.manager.addToRecentDocs", false); // ------------------------------------- // Enable user interaction for security by always asking how to handle new mimetypes [FF101+] user_pref("browser.download.always_ask_before_handling_new_types", true); // // EXTENSIONS // // Limit allowed extension directories user_pref("extensions.enabledScopes", 5); // [HIDDEN PREF] // user_pref("extensions.autoDisableScopes", 15); // [DEFAULT: 15] // ------------------------------------- // Disable bypassing 3rd party extension install prompts [FF82+] user_pref("extensions.postDownloadThirdPartyPrompt", false); // ------------------------------------- // Disable webextension restrictions on certain mozilla domains [FF60+] // user_pref("extensions.webextensions.restrictedDomains", ""); // ------------------------------------- // Disable extensions suggestions user_pref("extensions.webservice.discoverURL", ""); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // ETP (ENHANCED TRACKING PROTECTION) // >>>>>>>>>>>>>>>>>>>>> // // Enable ETP Strict Mode [FF86+] //CUSTOM-C // user_pref("browser.contentblocking.category", "strict"); // [HIDDEN PREF] // ------------------------------------- // Disable ETP web compat features [FF93+] // user_pref("privacy.antitracking.enableWebcompat", false); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // SHUTDOWN & SANITIZING // >>>>>>>>>>>>>>>>>>>>> // // Enable Firefox to clear items on shutdown user_pref("privacy.sanitize.sanitizeOnShutdown", true); // // SANITIZE ON SHUTDOWN: IGNORES "ALLOW" SITE EXCEPTIONS | v2 migration is FF128+ // // Set/enforce what items to clear on shutdown user_pref("privacy.clearOnShutdown.cache", true); user_pref("privacy.clearOnShutdown_v2.cache", true); // [FF128+] [DEFAULT: true] user_pref("privacy.clearOnShutdown.downloads", true); // [DEFAULT: true] user_pref("privacy.clearOnShutdown.formdata", true); // [DEFAULT: true] user_pref("privacy.clearOnShutdown.history", true); // [DEFAULT: true] user_pref("privacy.clearOnShutdown_v2.historyFormDataAndDownloads", true); // [FF128+] [DEFAULT: true] // user_pref("privacy.clearOnShutdown.siteSettings", false); // [DEFAULT: false] // user_pref("privacy.clearOnShutdown_v2.siteSettings", false); // [FF128+] [DEFAULT: false] // ------------------------------------- // Set Session Restore to clear on shutdown [FF34+] // user_pref("privacy.clearOnShutdown.openWindows", true); // // SANITIZE ON SHUTDOWN: RESPECTS "ALLOW" SITE EXCEPTIONS FF103+ | v2 migration is FF128+ // // Set "Cookies" and "Site Data" to clear on shutdown user_pref("privacy.clearOnShutdown.cookies", true); // Cookies user_pref("privacy.clearOnShutdown.offlineApps", true); // Site Data user_pref("privacy.clearOnShutdown.sessions", true); // Active Logins [DEFAULT: true] user_pref("privacy.clearOnShutdown_v2.cookiesAndStorage", true); // Cookies, Site Data, Active Logins [FF128+] // // SANITIZE SITE DATA: IGNORES "ALLOW" SITE EXCEPTIONS // // Set manual "Clear Data" items [FF128+] user_pref("privacy.clearSiteData.cache", true); user_pref("privacy.clearSiteData.cookiesAndStorage", false); // keep false until it respects "allow" site exceptions user_pref("privacy.clearSiteData.historyFormDataAndDownloads", true); // user_pref("privacy.clearSiteData.siteSettings", false); // // SANITIZE HISTORY: IGNORES "ALLOW" SITE EXCEPTIONS | clearHistory migration is FF128+ // // Set manual "Clear History" items, also via Ctrl-Shift-Del user_pref("privacy.cpd.cache", true); // [DEFAULT: true] user_pref("privacy.clearHistory.cache", true); user_pref("privacy.cpd.formdata", true); // Form & Search History user_pref("privacy.cpd.history", true); // Browsing & Download History // user_pref("privacy.cpd.downloads", true); // not used, see note above user_pref("privacy.clearHistory.historyFormDataAndDownloads", true); user_pref("privacy.cpd.cookies", false); user_pref("privacy.cpd.sessions", true); // [DEFAULT: true] user_pref("privacy.cpd.offlineApps", true); // [DEFAULT: false] user_pref("privacy.clearHistory.cookiesAndStorage", false); // user_pref("privacy.cpd.openWindows", false); // Session Restore // user_pref("privacy.cpd.passwords", false); // user_pref("privacy.cpd.siteSettings", false); // user_pref("privacy.clearHistory.siteSettings", false); // ------------------------------------- // // SANITIZE MANUAL: TIMERANGE // // set "Time range to clear" for "Clear Data" and "Clear History" // 0=everything, 1=last hour, 2=last two hours, 3=last four hours, 4=today user_pref("privacy.sanitize.timeSpan", 0); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // FPP (fingerprintingProtection) // >>>>>>>>>>>>>>>>>>>>> // Enable FPP in PB mode [FF114+] // user_pref("privacy.fingerprintingProtection.pbmode", true); // [DEFAULT: true FF118+] // ------------------------------------- // Set global FPP overrides [FF114+] // user_pref("privacy.fingerprintingProtection.overrides", ""); // ------------------------------------- // Set granular FPP overrides // user_pref("privacy.fingerprintingProtection.granularOverrides", ""); // ------------------------------------- // Disable remote FPP overrides [FF127+] // user_pref("privacy.fingerprintingProtection.remoteOverrides.enabled", false); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // OPTIONAL RFP (resistFingerprinting) // >>>>>>>>>>>>>>>>>>>>> // // Enable RFP user_pref("privacy.resistFingerprinting", true); // [FF41+] // user_pref("privacy.resistFingerprinting.pbmode", true); // [FF114+] // ------------------------------------- // Set RFP new window size max rounded values [FF55+] user_pref("privacy.window.maxInnerWidth", 1400); user_pref("privacy.window.maxInnerHeight", 900); // ------------------------------------- // Disable mozAddonManager Web API [FF57+] user_pref("privacy.resistFingerprinting.block_mozAddonManager", true); // ------------------------------------- // Enable letterboxing [FF67+] // user_pref("privacy.resistFingerprinting.letterboxing", true); // [HIDDEN PREF] // user_pref("privacy.resistFingerprinting.letterboxing.dimensions", ""); // [HIDDEN PREF] // ------------------------------------- // Disable RFP by domain [FF91+] // user_pref("privacy.resistFingerprinting.exemptedDomains", "*.example.invalid"); // ------------------------------------- // Enable RFP spoof english prompt [FF59+] // 0=prompt, 1=disabled, 2=enabled user_pref("privacy.spoof_english", 2); // ------------------------------------- // Disable using system colors user_pref("browser.display.use_system_colors", false); // [DEFAULT: false NON-WINDOWS] // ------------------------------------- // Enforce links targeting new windows to open in a new tab instead // 1=most recent window or tab, 2=new window, 3=new tab user_pref("browser.link.open_newwindow", 3); // [DEFAULT: 3] // ------------------------------------- // Set all open window methods to abide by "browser.link.open_newwindow" user_pref("browser.link.open_newwindow.restriction", 0); // ------------------------------------- // Disable WebGL (Web Graphics Library) user_pref("webgl.disabled", true); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // OPTIONAL OPSEC // >>>>>>>>>>>>>>>>>>>>> // // Start Firefox in PB (Private Browsing) mode // user_pref("browser.privatebrowsing.autostart", true); // ------------------------------------- // 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 saving passwords //CUSTOM-C user_pref("signon.rememberSignons", false); // ------------------------------------- // Disable permissions manager from writing to disk [FF41+] [RESTART] // user_pref("permissions.memory_only", true); // [HIDDEN PREF] // ------------------------------------- // Disable intermediate certificate caching [FF41+] [RESTART] // user_pref("security.nocertdb", true); // // ------------------------------------- // Disable favicons in history and bookmarks //CUSTOM-C // user_pref("browser.chrome.site_icons", false); // ------------------------------------- // Exclude "Undo Closed Tabs" in Session Restore // user_pref("browser.sessionstore.max_tabs_undo", 0); // ------------------------------------- // Disable resuming session from crash // user_pref("browser.sessionstore.resume_from_crash", false); // ------------------------------------- // Disable "open with" in download dialog [FF50+] // user_pref("browser.download.forbid_open_with", true); // ------------------------------------- // Disable location bar suggestion types 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+] user_pref("browser.urlbar.suggest.weather", false); // ------------------------------------- // Disable location bar dropdown // user_pref("browser.urlbar.maxRichResults", 0); // ------------------------------------- // Disable location bar autofill user_pref("browser.urlbar.autoFill", false); // ------------------------------------- // Disable 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); // ------------------------------------- // Discourage downloading to desktop // 0=desktop, 1=downloads (default), 2=custom // user_pref("browser.download.folderList", 2); // ------------------------------------- // Disable Form Autofill user_pref("extensions.formautofill.addresses.enabled", false); // [FF55+] user_pref("extensions.formautofill.creditCards.enabled", false); // [FF56+] // ------------------------------------- // Limit events that can cause a pop-up // user_pref("dom.popup_allowed_events", "click dblclick mousedown pointerdown"); // ------------------------------------- // Disable page thumbnail collection // user_pref("browser.pagethumbnails.capturing_disabled", true); // [HIDDEN PREF] // ------------------------------------- // Disable Windows native notifications and use app notications instead [FF111+] [WINDOWS] // user_pref("alerts.useSystemBackend.windows.notificationserver.enabled", false); // ------------------------------------- // Disable location bar using search //CUSTOM-C // user_pref("keyword.enabled", false); // ------------------------------------- // Force GPU sandboxing (Linux, default on Windows) user_pref("security.sandbox.gpu.level", 1); // ------------------------------------- // Enable Site Isolation user_pref("fission.autostart", true); user_pref("gfx.webrender.all", true); // ------------------------------------- // Disable Relay email feature user_pref("signon.firefoxRelay.feature", "disabled"); // ------------------------------------- // Disable Privacy-Preserving Attribution user_pref("dom.private-attribution.submission.enabled", false); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // OPTIONAL HARDENING // >>>>>>>>>>>>>>>>>>>>> // // Disable MathML (Mathematical Markup Language) [FF51+] user_pref("mathml.disabled", true); // ------------------------------------- // Disable in-content SVG (Scalable Vector Graphics) [FF53+] // user_pref("svg.disabled", true); // ------------------------------------- // Disable graphite user_pref("gfx.font_rendering.graphite.enabled", false); // ------------------------------------- // Disable asm.js [FF22+] user_pref("javascript.options.asmjs", false); // ------------------------------------- // Disable Ion and baseline JIT to harden against JS exploits [RESTART] 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+] user_pref("javascript.options.wasm", false); // ------------------------------------- // Disable rendering of SVG OpenType fonts user_pref("gfx.font_rendering.opentype_svg.enabled", false); // ------------------------------------- // Disable widevine CDM (Content Decryption Module) user_pref("media.gmp-widevinecdm.enabled", false); // ------------------------------------- // Disable all DRM content (EME: Encryption Media Extension) user_pref("media.eme.enabled", false); user_pref("browser.eme.ui.enabled", false); // ------------------------------------- // Disable IPv6 if using a VPN // user_pref("network.dns.disableIPv6", true); // ------------------------------------- // Control when to send a cross-origin referer // * 0=always (default), 1=only if base domains match, 2=only if hosts match user_pref("network.http.referer.XOriginPolicy", 1); // ------------------------------------- // Set DoH bootstrap address [FF89+] // user_pref("network.trr.bootstrapAddr", "10.0.0.1"); // [HIDDEN PREF] // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // DON'T TOUCH // >>>>>>>>>>>>>>>>>>>>> // // Disable Firefox blocklist user_pref("extensions.blocklist.enabled", false); // [DEFAULT: true] user_pref("extensions.blocklist.addonItemURL", ""); user_pref("extensions.blocklist.detailsURL", ""); user_pref("extensions.blocklist.itemURL", ""); user_pref("services.blocklist.addons.collection", ""); user_pref("services.blocklist.addons.signer", ""); user_pref("services.blocklist.plugins.collection", ""); user_pref("services.blocklist.plugins.signer", ""); user_pref("services.blocklist.gfx.collection", ""); user_pref("services.blocklist.gfx.signer", ""); // ------------------------------------- // Enforce no referer spoofing user_pref("network.http.referer.spoofSource", true); // [DEFAULT: false] // ------------------------------------- // Enforce a security delay on some confirmation dialogs such as install, open/save user_pref("security.dialog_enable_delay", 1000); // [DEFAULT: 1000] // ------------------------------------- // Enforce no First Party Isolation [FF51+] user_pref("privacy.firstparty.isolate", false); // [DEFAULT: false] // ------------------------------------- // Enforce SmartBlock shims (about:compat) [FF81+] user_pref("extensions.webcompat.enable_shims", true); // [HIDDEN PREF] [DEFAULT: true] // ------------------------------------- // Enforce no TLS 1.0/1.1 downgrades user_pref("security.tls.version.enable-deprecated", false); // [DEFAULT: false] // ------------------------------------- // Enforce disabling of Web Compatibility Reporter [FF56+] user_pref("extensions.webcompat-reporter.enabled", false); // [DEFAULT: false] // ------------------------------------- // Disable Quarantined Domains [FF115+] user_pref("extensions.quarantinedDomains.enabled", false); // [DEFAULT: true] // ------------------------------------- // prefsCleaner: previously active items removed from arkenfox 115-127 // user_pref("accessibility.force_disabled", ""); // user_pref("browser.urlbar.dnsResolveSingleWordsAfterSearch", ""); // user_pref("network.protocol-handler.external.ms-windows-store", ""); // user_pref("privacy.partition.always_partition_third_party_non_cookie_storage", ""); // user_pref("privacy.partition.always_partition_third_party_non_cookie_storage.exempt_sessionstorage", ""); // user_pref("privacy.partition.serviceWorkers", ""); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // DON'T BOTHER // >>>>>>>>>>>>>>>>>>>>> // // Disable APIs user_pref("geo.enabled", false); // user_pref("full-screen-api.enabled", false); // ------------------------------------- // Set default permissions // 0=always ask (default), 1=allow, 2=block user_pref("permissions.default.geo", 2); user_pref("permissions.default.camera", 2); user_pref("permissions.default.microphone", 2); user_pref("permissions.default.desktop-notification", 2); user_pref("permissions.default.xr", 2); // Virtual Reality // ------------------------------------- // Disable canvas capture stream user_pref("canvas.capturestream.enabled", false); // ------------------------------------- // Disable offscreen canvas user_pref("gfx.offscreencanvas.enabled", false); // ------------------------------------- // Disable non-modern cipher suites // user_pref("security.ssl3.ecdhe_ecdsa_aes_128_sha", false); // user_pref("security.ssl3.ecdhe_ecdsa_aes_256_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_gcm_sha256", false); // no PFS // user_pref("security.ssl3.rsa_aes_256_gcm_sha384", false); // no PFS // user_pref("security.ssl3.rsa_aes_128_sha", false); // no PFS // user_pref("security.ssl3.rsa_aes_256_sha", false); // no PFS // ------------------------------------- // Control TLS versions // user_pref("security.tls.version.min", 3); // [DEFAULT: 3] // user_pref("security.tls.version.max", 4); // ------------------------------------- // Disable SSL session IDs [FF36+] // user_pref("security.ssl.disable_session_identifiers", true); // ------------------------------------- // Onions // user_pref("dom.securecontext.allowlist_onions", true); // user_pref("network.http.referer.hideOnionSource", true); // ------------------------------------- // Referers // user_pref("network.http.sendRefererHeader", 2); // user_pref("network.http.referer.trimmingPolicy", 0); // ------------------------------------- // Set the default Referrer Policy [FF59+] // 0=no-referer, 1=same-origin, 2=strict-origin-when-cross-origin, 3=no-referrer-when-downgrade // user_pref("network.http.referer.defaultPolicy", 2); // [DEFAULT: 2] // user_pref("network.http.referer.defaultPolicy.pbmode", 2); // [DEFAULT: 2] // ------------------------------------- // Disable HTTP Alternative Services [FF37+] // user_pref("network.http.altsvc.enabled", false); // ------------------------------------- // Disable website control over browser right-click context menu // user_pref("dom.event.contextmenu.enabled", false); // ------------------------------------- // Disable icon fonts (glyphs) and local fallback rendering // user_pref("gfx.downloadable_fonts.enabled", false); // [FF41+] // user_pref("gfx.downloadable_fonts.fallback_delay", -1); // ------------------------------------- // Disable Clipboard API // user_pref("dom.event.clipboardevents.enabled", false); // ------------------------------------- // Disable System Add-on updates user_pref("extensions.systemAddon.update.enabled", false); // [FF62+] user_pref("extensions.systemAddon.update.url", ""); // [FF44+] // ------------------------------------- // Enable the DNT (Do Not Track) HTTP header user_pref("privacy.donottrackheader.enabled", false); // ------------------------------------- // Customize ETP settings // user_pref("network.cookie.cookieBehavior", 5); // [DEFAULT: 5] // user_pref("privacy.fingerprintingProtection", true); // [FF114+] [ETP FF119+] // user_pref("privacy.partition.network_state.ocsp_cache", true); // [DEFAULT: true FF123+] // user_pref("privacy.query_stripping.enabled", true); // [FF101+] user_pref("privacy.query_stripping.strip_list", "__hsfp __hssc __hstc __s _hsenc _openstat dclid fbclid gbraid gclid hsCtaTracking igshid mc_eid ml_subscriber ml_subscriber_hash msclkid oft_c oft_ck oft_d oft_id oft_ids oft_k oft_lk oft_sk oly_anon_id oly_enc_id rb_clickid s_cid twclid vero_conv vero_id wbraid wickedid yclid"); // user_pref("network.http.referer.disallowCrossSiteRelaxingDefault", true); // user_pref("network.http.referer.disallowCrossSiteRelaxingDefault.top_navigation", true); // [FF100+] // user_pref("privacy.trackingprotection.enabled", true); // user_pref("privacy.trackingprotection.socialtracking.enabled", true); // user_pref("privacy.trackingprotection.cryptomining.enabled", true); // [DEFAULT: true] // user_pref("privacy.trackingprotection.fingerprinting.enabled", true); // [DEFAULT: true] // ------------------------------------- // Allow embedded tweets and Reddit posts. Don't do it! // user_pref("urlclassifier.trackingSkipURLs", "*.reddit.com, *.twitter.com, *.twimg.com"); // [HIDDEN PREF] // user_pref("urlclassifier.features.socialtracking.skipURLs", "*.instagram.com, *.twitter.com, *.twimg.com"); // [HIDDEN PREF] // ------------------------------------- // Disable service workers // user_pref("dom.serviceWorkers.enabled", false); // ------------------------------------- // Disable Web Notifications [FF22+] // user_pref("dom.webnotifications.enabled", false); // ------------------------------------- // Disable Push Notifications [FF44+] user_pref("dom.push.enabled", false); user_pref("dom.push.connection.enabled", false); user_pref("dom.push.serverURL", ""); user_pref("dom.push.userAgentID", ""); // ------------------------------------- // Disable WebRTC (Web Real-Time Communication) user_pref("media.peerconnection.enabled", false); // ------------------------------------- // Enable GPC (Global Privacy Control) in non-PB windows // user_pref("privacy.globalprivacycontrol.enabled", true); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // DON'T BOTHER: FINGERPRINTING // >>>>>>>>>>>>>>>>>>>>> // // prefsCleaner: reset items useless for anti-fingerprinting // user_pref("browser.zoom.siteSpecific", false); // user_pref("dom.enable_performance", false); // user_pref("dom.enable_resource_timing", false); // user_pref("dom.maxHardwareConcurrency", 2); // user_pref("font.system.whitelist", ""); // [HIDDEN PREF] // user_pref("general.appname.override", ""); // [HIDDEN PREF] // user_pref("general.appversion.override", ""); // [HIDDEN PREF] // user_pref("general.buildID.override", "20181001000000"); // [HIDDEN PREF] // user_pref("general.oscpu.override", ""); // [HIDDEN PREF] // user_pref("general.platform.override", ""); // [HIDDEN PREF] // user_pref("general.useragent.override", "Mozilla/5.0 (Windows NT 10.0; rv:115.0) Gecko/20100101 Firefox/115.0"); // [HIDDEN PREF] // user_pref("media.ondevicechange.enabled", false); // user_pref("media.video_stats.enabled", false); // user_pref("webgl.enable-debug-renderer-info", false); user_pref("ui.use_standins_for_native_colors", true); // user_pref("browser.display.use_document_fonts", 0); user_pref("device.sensors.enabled", false); user_pref("dom.gamepad.enabled", false); user_pref("dom.netinfo.enabled", false); user_pref("dom.vibrator.enabled", false); user_pref("dom.w3c_touch_events.enabled", 0); user_pref("dom.webaudio.enabled", false); user_pref("media.navigator.enabled", false); user_pref("media.webspeech.synth.enabled", false); // ------------------------------------- // Disable API for measuring text width and height. user_pref("dom.textMetrics.actualBoundingBox.enabled", false); user_pref("dom.textMetrics.baselines.enabled", false); user_pref("dom.textMetrics.emHeight.enabled", false); user_pref("dom.textMetrics.fontBoundingBox.enabled", false); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // NON-PROJECT RELATED // >>>>>>>>>>>>>>>>>>>>> // // WELCOME & WHAT'S NEW NOTICES // user_pref("browser.startup.homepage_override.mstone", "ignore"); // [HIDDEN PREF] 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); // [DEFAULT: false FF94+] user_pref("browser.tabs.warnOnCloseOtherTabs", false); user_pref("browser.tabs.warnOnOpen", false); user_pref("browser.warnOnQuitShortcut", false); // [FF94+] user_pref("full-screen-api.warning.delay", 0); user_pref("full-screen-api.warning.timeout", 0); user_pref("browser.warnOnQuit", false); // // UPDATES // // Disable auto-INSTALLING Firefox updates [NON-WINDOWS] //CUSTOM-C // user_pref("app.update.auto", false); // ------------------------------------- // Disable auto-CHECKING for extension and theme updates //CUSTOM-C // user_pref("extensions.update.enabled", false); // ------------------------------------- // Disable auto-INSTALLING extension and theme updates user_pref("extensions.update.autoUpdateDefault", false); // ------------------------------------- // Disable extension metadata user_pref("extensions.getAddons.cache.enabled", false); // ------------------------------------- // Disable search engine updates (e.g. OpenSearch) user_pref("browser.search.update", false); // // 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 // // FIREFOX HOME CONTENT // user_pref("browser.newtabpage.activity-stream.feeds.section.topstories", false); // Recommended by Pocket user_pref("browser.newtabpage.activity-stream.section.highlights.includePocket", false); // user_pref("browser.newtabpage.activity-stream.feeds.topsites", false); //CUSTOM-C // user_pref("browser.newtabpage.activity-stream.showSearch", false); //CUSTOM-C user_pref("browser.newtabpage.activity-stream.section.highlights.includeBookmarks", false); user_pref("browser.newtabpage.activity-stream.section.highlights.includeDownloads", false); user_pref("browser.newtabpage.activity-stream.section.highlights.includeVisited", false); // // UX FEATURES // user_pref("extensions.pocket.enabled", false); // Pocket Account [FF46+] user_pref("extensions.screenshots.disabled", true); // [FF55+] user_pref("identity.fxaccounts.enabled", false); // Firefox Accounts & Sync [FF60+] [RESTART] user_pref("reader.parse-on-load.enabled", false); // Reader View user_pref("browser.tabs.firefox-view", false); // Firefox-view // // OTHER // // user_pref("browser.bookmarks.max_backups", 2); user_pref("security.tls.enable_kyber", true); user_pref("network.http.http3.enable_kyber", true); user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons", false); // disable CFR [FF67+] user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features", false); // disable CFR [FF67+] user_pref("browser.urlbar.showSearchTerms.enabled", false); user_pref("browser.sessionstore.interval", 30000); // minimum interval between session save operations user_pref("network.manage-offline-status", false); user_pref("browser.preferences.moreFromMozilla", false); user_pref("browser.disableResetPrompt", true); // [HIDDEN PREF] // user_pref("xpinstall.signatures.required", false); // enforced extension signing (Nightly/ESR) // // MORE // // user_pref("security.insecure_connection_icon.enabled", ""); // [DEFAULT: true FF70+] // user_pref("security.mixed_content.block_active_content", ""); // [DEFAULT: true since at least FF60] user_pref("security.ssl.enable_ocsp_stapling", false); // [DEFAULT: true FF26+] // user_pref("webgl.disable-fail-if-major-performance-caveat", ""); // [DEFAULT: true FF86+] user_pref("webgl.enable-webgl2", false); // user_pref("webgl.min_capability_mode", ""); // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // DEPRECATED / RENAMED // >>>>>>>>>>>>>>>>>>>>> // // ESR115.x still uses all the following prefs // // FF116 // // Set RFP's font visibility level [FF94+] // user_pref("layout.css.font-visibility.resistFingerprinting", 1); // [DEFAULT: 1] // // FF117 // // Disable Windows Microsoft Family Safety cert [FF50+] [WINDOWS] //CUSTOM-C // user_pref("security.family_safety.mode", 0); // ------------------------------------- // Disable service worker Web Notifications [FF44+] // user_pref("dom.webnotifications.serviceworker.enabled", false); // // FF118 // // Limit font visibility (Windows, Mac, some Linux) [FF94+] // user_pref("layout.css.font-visibility.private", 1); // user_pref("layout.css.font-visibility.standard", 1); // user_pref("layout.css.font-visibility.trackingprotection", 1); // ------------------------------------- // Disable permissions delegation [FF73+] // user_pref("permissions.delegation.enabled", false); // // FF119 // // Use en-US locale regardless of the system or region locale // user_pref("javascript.use_us_english_locale", true); // [HIDDEN PREF] // ------------------------------------- // Disable skipping DoH when parental controls are enabled [FF70+] user_pref("network.dns.skipTRR-when-parental-control-enabled", false) // // FF123 // // Disable PingCentre telemetry (used in several System Add-ons) [FF57+] user_pref("browser.ping-centre.telemetry", false); // // FF126 // // Disable What's New toolbar icon [FF69+] user_pref("browser.messaging-system.whatsNewPanel.enabled", false); // // FF127 // // Disable content analysis by DLP (Data Loss Prevention) agents - replaced by default_result user_pref("browser.contentanalysis.default_allow", false); // ------------------------------------- // Enforce non-native widget theme user_pref("widget.non-native-theme.enabled", true); // [DEFAULT: true] // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // PERSONAL PREFERENCES // >>>>>>>>>>>>>>>>>>>>> // Firefox don't close the window when you close the last tab user_pref("browser.tabs.closeWindowWithLastTab", false); // userChrome & userContent support user_pref("toolkit.legacyUserProfileCustomizations.stylesheets", true); // Fix Scrolling user_pref("general.smoothScroll.currentVelocityWeighting", 0); // user_pref("general.smoothScroll.mouseWheel.durationMaxMS", 250); // user_pref("general.smoothScroll.stopDecelerationWeighting", 0.82); user_pref("mousewheel.min_line_scroll_amount", 25); // Mozilla VPN user_pref("browser.privatebrowsing.vpnpromourl", ""); // Firefox Labs user_pref("browser.preferences.experimental", true); // END