Update 'user.js'

user.js

@@ -18,10 +18,7 @@
 // STARTUP
 // >>>>>>>>>>>>>>>>>>>>>
 // Disable about:config warning
-// FF71-72: chrome://global/content/config.xul
+user_pref("browser.aboutConfig.showWarning", false);
-// FF73+: chrome://global/content/config.xhtml ***/
-user_pref("general.warnOnAboutConfig", false); // XHTML version
-user_pref("browser.aboutConfig.showWarning", false); // HTML version [FF71+]
 // -------------------------------------
 // Disable separate about:welcome page
 // https://bugzilla.mozilla.org/show_bug.cgi?id=1617783
@@ -89,7 +86,7 @@ user_pref("browser.newtabpage.activity-stream.default.sites", "");
 // GEOLOCATION ***/
 // >>>>>>>>>>>>>>>>>>>>>
 // Disable Location-Aware Browsing
-// [NOTE] Best left at default "true", fingerprintable, already behind a prompt
+// [WARNING] The API state is fingerprintable. Permission is already behind a prompt
 // https://www.mozilla.org/firefox/geolocation/ ***/
 user_pref("geo.enabled", false);
 user_pref("browser.search.geoip.url", ""); // [HIDDEN PREF]
@@ -101,7 +98,7 @@ user_pref("browser.search.geoip.url", ""); // [HIDDEN PREF]
 // [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+]
+// Use Mozilla geolocation service instead of Google if geolocation is granted [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]
@@ -140,8 +137,8 @@ user_pref("privacy.spoof_english", 2);
 // Disable auto-CHECKING for extension and theme updates ***/
 user_pref("extensions.update.enabled", false);
 // -------------------------------------
-// Disable auto-INSTALLING Firefox updates [NON-WINDOWS FF65+]
+// Disable auto-INSTALLING Firefox updates [NON-WINDOWS]
-// [NOTE] In FF65+ on Windows this SETTING (below) is now stored in a file and the pref was removed
+// [NOTE] You will still get prompts to update, and should do so in a timely manner
 // [SETTING] General>Firefox Updates>Check for updates but let you choose to install them ***/
 user_pref("app.update.auto", false);
 user_pref("app.update.staging.enabled", false);
@@ -408,7 +405,7 @@ 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"
+// Shield is a telemetry system that can push and test "recipes"
 // https://mozilla.github.io/normandy/
 user_pref("app.normandy.enabled", false);
 user_pref("app.normandy.api_url", "");
@@ -490,7 +487,7 @@ user_pref("network.dns.disableIPv6", true);
 // [STATS] ~46% of sites (July 2021)
 // 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://datatracker.ietf.org/doc/html/rfc7540#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);
@@ -616,7 +613,7 @@ user_pref("browser.urlbar.autoFill", false);
 user_pref("browser.formfill.enable", false);
 // -------------------------------------
 // Disable browsing and download history
-// [NOTE] We also clear history and downloads on exiting Firefox
+// [NOTE] We also clear history and downloads on exit
 // [SETTING] Privacy & Security>History>Custom Settings>Remember browsing and download history ***/
 user_pref("places.history.enabled", false);
 // -------------------------------------
@@ -650,7 +647,7 @@ 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);
+user_pref("security.password_lifetime", 5); // [DEFAULT: 30]
 // -------------------------------------
 // Disable auto-filling username & password form fields
 // can leak in cross-site forms *and* be spoofed
@@ -680,7 +677,7 @@ user_pref("network.http.windows-sso.enabled", false);
 // 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 ***/
+// [NOTE] We also clear cache on exit
 user_pref("browser.cache.disk.enable", false);
 // -------------------------------------
 // Disable memory cache
@@ -898,7 +895,8 @@ user_pref("dom.security.https_only_mode_send_http_background_request", false);
 // user_pref("dom.securecontext.whitelist_onions", true);
 //
 // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
-// CIPHERS [WARNING: do not meddle with your cipher suite]
+// CIPHERS
+// [WARNING: DO NOT USE
 // >>>>>>>>>>>>>>>>>>>>>
 // Disable 3DES (effective key size < 128 and no PFS)
 // https://en.wikipedia.org/wiki/3des#Security
@@ -946,18 +944,6 @@ user_pref("security.insecure_connection_text.pbmode.enabled", true);
 // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
 // 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);
@@ -968,11 +954,18 @@ user_pref("gfx.font_rendering.opentype_svg.enabled", false);
 // https://en.wikipedia.org/wiki/Graphite_(SIL) ***/
 user_pref("gfx.font_rendering.graphite.enabled", false);
 // -------------------------------------
-// Limit system font exposure to a whitelist [FF52+] [RESTART]
+// Limit font visibility (Windows, Mac, some Linux) [FF79+]
-// If the whitelist is empty, then whitelisting is considered disabled and all fonts are allowed
+// [NOTE] IN FF8)+ RFP ignores the pref and uses value 1
-// [WARNING] DO NOT USE: in FF80+ RFP covers this, and non-RFP users should use font vis
+// Uses hardcoded lists with two parts: kBaseFonts + kLangPackFonts, bundled fonts are auto-allowed
-// https://bugzilla.mozilla.org/1121643 ***/
+// 1=only base system fonts, 2=also fonts from optional language packs, 3=also user-installed fonts
-// user_pref("font.system.whitelist", ""); // [HIDDEN PREF]
+// https://searchfox.org/mozilla-central/search?path=StandardFonts*.inc ***/
+// user_pref("layout.css.font-visibility.level", 1);
+// -------------------------------------
+// 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);
 //
 // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
 // HEADERS / REFERERS
@@ -1022,13 +1015,10 @@ user_pref("privacy.donottrackheader.enabled", false);
 // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
 // CONTAINERS
 // >>>>>>>>>>>>>>>>>>>>>
-// Enable Container Tabs setting in preferences [FF50+]
+// Enable Container Tabs  and it's UI setting [FF50+]
-// https://bugzilla.mozilla.org/1279029 ***/
+// [SETTING] General>Tabs>Enable Container Tabs
-user_pref("privacy.userContext.ui.enabled", true);
-// -------------------------------------
-// Enable Container Tabs [FF50+]
-// [SETTING] General>Tabs>Enable Container Tabs ***/
 user_pref("privacy.userContext.enabled", true);
+user_pref("privacy.userContext.ui.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
@@ -1175,10 +1165,7 @@ user_pref("dom.vibrator.enabled", false);
 // -------------------------------------
 // Disable asm.js [FF22+] [SETUP-PERF]
 // http://asmjs.org/
-// https://www.mozilla.org/security/advisories/mfsa2015-29/
+// https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=asm.js
-// 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);
 // -------------------------------------
@@ -1186,7 +1173,7 @@ user_pref("javascript.options.asmjs", false);
 // [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 ***/
+// https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=Firefox+JIT
 user_pref("javascript.options.ion", false);
 user_pref("javascript.options.baselinejit", false);
 user_pref("javascript.options.native_regexp", false);
@@ -1228,8 +1215,8 @@ user_pref("dom.battery.enabled", false);
 // user_pref("media.media-capabilities.enabled", false);
 // -------------------------------------
 // Disable virtual reality devices
-// [WARNING] The API state is fingerprintable
+// [WARNING] The API state is fingerprintable. Permission is already behind a prompt
-// https://developer.mozilla.org/docs/Web/API/WebVR_API ***/
+// https://developer.mozilla.org/docs/Web/API/WebVR_API
 user_pref("dom.vr.enabled", false);
 // -------------------------------------
 // Set a default permission for Virtual Reality [FF73+]
@@ -1464,12 +1451,12 @@ user_pref("network.cookie.lifetimePolicy", 2);
 // -------------------------------------
 // Disable offline cache (appCache)
 // [NOTE] In FF90+ the storage capability has been removed.
-// [WARNING] The API is easily fingerprinted, do not disable ***/
+// [WARNING] The API state is fingerprintable. Storage capability was removed in FF90+
 // user_pref("browser.cache.offline.enable", false);
 // -------------------------------------
 // Disable service worker cache and cache storage
-// [NOTE] We clear service worker cache on exiting Firefox
+// [NOTE] We clear service worker cache on exit
-// https://w3c.github.io/ServiceWorker/#privacy ***/
+// https://w3c.github.io/ServiceWorker/#privacy
 // user_pref("dom.caches.enabled", false);
 // -------------------------------------
 // Disable Storage API [FF51+]
@@ -1618,86 +1605,14 @@ user_pref("browser.startup.blankWindow", false);
 user_pref("ui.prefersReducedMotion", 1); // [HIDDEN PREF]
 //
 // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
-// RFP ALTERNATIVES
+// WELCOME & WHAT'S NEW NOTICES
-// >>>>>>>>>>>>>>>>>>>>>
-// Spoof number of CPU cores [FF48+]
-// user_pref("dom.maxHardwareConcurrency", 2);
-// -------------------------------------
-// Disable Resource Timing API
-// user_pref("dom.enable_resource_timing", false);
-// -------------------------------------
-// Disable Navigation Timing API
-// user_pref("dom.enable_performance", false);
-// -------------------------------------
-// Disable device sensor API
-user_pref("device.sensors.enabled", false);
-// -------------------------------------
-// Disable remembering site specific zoom
-// user_pref("browser.zoom.siteSpecific", false);
-// -------------------------------------
-// Disable gamepad API - USB device ID enumeration
-// user_pref("dom.gamepad.enabled", false);
-// -------------------------------------
-// Disable Network Information API [FF31+]
-// user_pref("dom.netinfo.enabled", false); // [DEFAULT: true on Android]
-// -------------------------------------
-// Disable the SpeechSynthesis (Text-to-Speech) part of the Web Speech API
-// user_pref("media.webspeech.synth.enabled", false);
-// -------------------------------------
-//  Disable video statistics to mitigate JS performance fingerprinting [FF25+]
-// user_pref("media.video_stats.enabled", false);
-// -------------------------------------
-// Disable touch events
-user_pref("dom.w3c_touch_events.enabled", 0);
-// -------------------------------------
-// Disable media device enumeration [FF29+]
-user_pref("media.navigator.enabled", false);
-// -------------------------------------
-// Disable MediaDevices change detection [FF51+]
-// user_pref("media.ondevicechange.enabled", false);
-// -------------------------------------
-// Disable WebGL debug info being available to websites
-// 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 exposure of system colors to CSS or canvas [FF44+]
-// 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]
-// -------------------------------------
-// Disable Web Audio API [FF51+]
-user_pref("dom.webaudio.enabled", false);
-// -------------------------------------
-// Limit font visibility (Windows, Mac, some Linux) [FF79+]
-// Uses hardcoded lists with two parts: kBaseFonts + kLangPackFonts [1], bundled fonts are auto-allowed
-// 1=only base system fonts, 2=also fonts from optional language packs, 3=also user-installed fonts
-// https://searchfox.org/mozilla-central/search?path=StandardFonts*.inc ***/
-// user_pref("layout.css.font-visibility.level", 1);
-// -------------------------------------
-// Navigator DOM object overrides
-// [WARNING] NO NOT USE: these prefs are insufficient and leak
-// 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:78.0) Gecko/20100101 Firefox/78.0"); // [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 ***/
+// WARNINGS
 // >>>>>>>>>>>>>>>>>>>>>
 user_pref("browser.tabs.warnOnClose", false);
 user_pref("browser.tabs.warnOnCloseOtherTabs", false);
@@ -1707,20 +1622,20 @@ user_pref("full-screen-api.warning.timeout", 0);
 user_pref("browser.warnOnQuit", false);
 //
 // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
-// APPEARANCE ***/
+// APPEARANCE
 // >>>>>>>>>>>>>>>>>>>>>
 // user_pref("browser.download.autohideButton", false); // [FF57+]
 // user_pref("toolkit.legacyUserProfileCustomizations.stylesheets", true); // [FF68+] allow userChrome/userContent
 //
 // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
-// CONTENT BEHAVIOR ***/
+// 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 ***/
+// UX BEHAVIOR
 // >>>>>>>>>>>>>>>>>>>>>
 // user_pref("browser.backspace_action", 2); // 0=previous page, 1=scroll up, 2=do nothing
 // user_pref("browser.quitShortcut.disabled", true); // disable Ctrl-Q quit shortcut [LINUX] [MAC] [FF87+]
@@ -1732,16 +1647,16 @@ user_pref("layout.spellcheckDefault", 0); // 0=none, 1-multi-line, 2=multi-line
 // 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 ***/
+// UX FEATURES: Disable and hide the icons and menus
 // >>>>>>>>>>>>>>>>>>>>>
-user_pref("browser.messaging-system.whatsNewPanel.enabled", false); // What's New [FF69+]
+user_pref("browser.messaging-system.whatsNewPanel.enabled", false); // What's New toolbar icon [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 ***/
+// OTHER
 // >>>>>>>>>>>>>>>>>>>>>
 // user_pref("browser.bookmarks.max_backups", 2);
 user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons", false); // disable CFR [FF67+]
@@ -1751,12 +1666,81 @@ user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features",
 // [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)
-user_pref("xpinstall.signatures.devInfoURL", "");
+// -------------------------------------
-user_pref("webextensions.storage.sync.serverURL", "");
+// Test user.js in about:config
-user_pref("lightweightThemes.getMoreURL", "");
+user_pref("_config.applied", true);
-user_pref("remote.enabled", false);
+//
-user_pref("javascript.options.shared_memory", false);
+// >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
-user_pref("default-browser-agent.enabled", false);
+// DON'T BOTHER: NON-RFP
+// >>>>>>>>>>>>>>>>>>>>>
+// Spoof number of CPU cores [FF48+] ***/
+// user_pref("dom.maxHardwareConcurrency", 2);
+// -------------------------------------
+// Disable Resource Timing API
+// user_pref("dom.enable_resource_timing", false);
+// -------------------------------------
+// Disable Navigation Timing API
+// user_pref("dom.enable_performance", false);
+// -------------------------------------
+// Disable device Sensor APIs
+user_pref("device.sensors.enabled", false);
+// -------------------------------------
+// Disable remembering site specific zoom
+// user_pref("browser.zoom.siteSpecific", false);
+// -------------------------------------
+// Disable gamepad API to prevent USB device ID enumeration
+// user_pref("dom.gamepad.enabled", false);
+// -------------------------------------
+// Disable Network Information API [FF31+]
+user_pref("dom.netinfo.enabled", false); // [DEFAULT: true on Android]
+// -------------------------------------
+// Disable the SpeechSynthesis (Text-to-Speech) part of the Web Speech API
+// user_pref("media.webspeech.synth.enabled", false);
+// -------------------------------------
+// Disable video statistics to mitigate JS performance fingerprinting [FF25+]
+// user_pref("media.video_stats.enabled", false);
+// -------------------------------------
+// Disable touch events: 0=disabled, 1=enabled, 2=autodetect [FENNEC BUG]
+user_pref("dom.w3c_touch_events.enabled", 1);
+// -------------------------------------
+// Disable media device enumeration [FF29+]
+user_pref("media.navigator.enabled", false);
+// -------------------------------------
+// Disable MediaDevices change detection [FF51+]
+// user_pref("media.ondevicechange.enabled", false);
+// -------------------------------------
+// Disable WebGL debug info being available to websites
+// user_pref("webgl.enable-debug-renderer-info", false);
+// -------------------------------------
+// Enforce prefers-reduced-motion as no-preference: 0=no-preference, 1=reduce [FF63+] [RESTART]
+// user_pref("ui.prefersReducedMotion", 0); // [HIDDEN PREF]
+// -------------------------------------
+// Disable exposure of system colors to CSS or canvas [FF44+]
+// user_pref("ui.use_standins_for_native_colors", true);
+// -------------------------------------
+// Enforce prefers-color-scheme as light: 0=light, 1=dark [FF67+]
+// user_pref("ui.systemUsesDarkTheme", 0); // [HIDDEN PREF]
+// -------------------------------------
+// Disable Web Audio API [FF51+]
+user_pref("dom.webaudio.enabled", false);
+// -------------------------------------
+// Disable websites choosing fonts (0=block, 1=allow) ***/
+// user_pref("browser.display.use_document_fonts", 0);
+// -------------------------------------
+// Limit system font exposure to a whitelist [FF52+] [RESTART]
+// If the whitelist is empty, then whitelisting is considered disabled and all fonts are allowed
+// [NOTE] In FF81+ the whitelist overrides RFP and font visibility
+// https://bugzilla.mozilla.org/1121643
+// user_pref("font.system.whitelist", ""); // [HIDDEN PREF]
+// -------------------------------------
+// Navigator DOM object overrides
+// [WHY] These prefs are insufficient and leak
+// 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:78.0) Gecko/20100101 Firefox/78.0"); // [HIDDEN PREF]
 //
 // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
 // DEPRECATED / REMOVED / LEGACY / RENAMED
@@ -1779,7 +1763,7 @@ user_pref("browser.search.geoSpecificDefaults.url", "");
 // -------------------------------------
 // FF86
 // Disable SSL Error Reporting
-// https://firefox-source-docs.mozilla.org/browser/base/sslerrorreport/preferences.html
+// https://firefox-source-docs.mozilla.org/main/65.0/browser/base/sslerrorreport/preferences.html
 // https://bugzilla.mozilla.org/1681839
 user_pref("security.ssl.errorReporting.automatic", false);
 user_pref("security.ssl.errorReporting.enabled", false);