prefsCleaner.bat

@@ -3,7 +3,7 @@ TITLE prefs.js cleaner
 
 REM ### prefs.js cleaner for Windows
 REM ## author: @claustromaniac
-REM ## version: 2.8
+REM ## version: 2.7
 
 CD /D "%~dp0"
 
@@ -15,7 +15,7 @@ ECHO:
 ECHO                 ########################################
 ECHO                 ####  prefs.js cleaner for Windows  ####
 ECHO                 ####        by claustromaniac       ####
-ECHO                 ####              v2.8              ####
+ECHO                 ####              v2.7              ####
 ECHO                 ########################################
 ECHO:
 CALL :message "This script should be run from your Firefox profile directory."
@@ -37,7 +37,7 @@ CALL :strlenCheck
 CALL :FFcheck
 
 CALL :message "Backing up prefs.js..."
-FOR /F "delims=" %%# IN ('powershell -command get-date -format "{yyyyMMdd_HHmmss}"') DO @SET ldt=%%#
+FOR /F "delims=" %%# IN ('powershell get-date -format "{yyyyMMdd_HHmmss}"') DO @SET ldt=%%#
 COPY /B /V /Y prefs.js "prefs-backup-%ldt%.js"
 
 CALL :message "Cleaning prefs.js..."

prefsCleaner.sh

@@ -2,7 +2,7 @@
 
 ## prefs.js cleaner for Linux/Mac
 ## author: @claustromaniac
-## version: 2.1
+## version: 2.0
 
 ## special thanks to @overdodactyl and @earthlng for a few snippets that I stol..*cough* borrowed from the updater.sh
 
@@ -132,13 +132,13 @@ done
 ## change directory to the Firefox profile directory
 cd "$(dirname "${SCRIPT_FILE}")"
 
-# Check if running as root and if any files have the owner as root/wheel.
+# Check if running as root and if any files have the owner/group as root/wheel.
 if [ "${EUID:-"$(id -u)"}" -eq 0 ]; then
 	fQuit 1 "You shouldn't run this with elevated privileges (such as with doas/sudo)."
-elif [ -n "$(find ./ -user 0)" ]; then
+elif [ -n "$(find ./ -user 0 -o -group 0)" ]; then
 	printf 'It looks like this script was previously run with elevated privileges,
 you will need to change ownership of the following files to your user:\n'
-	find . -user 0
+	find . -user 0 -o -group 0
 	fQuit 1
 fi
 
@@ -148,7 +148,7 @@ echo -e "\n\n"
 echo "                   ╔══════════════════════════╗"
 echo "                   ║     prefs.js cleaner     ║"
 echo "                   ║    by claustromaniac     ║"
-echo "                   ║           v2.1           ║"
+echo "                   ║           v2.0           ║"
 echo "                   ╚══════════════════════════╝"
 echo -e "\nThis script should be run from your Firefox profile directory.\n"
 echo "It will remove any entries from prefs.js that also exist in user.js."

scratchpad-scripts/arkenfox-cleanup.js

@@ -6,7 +6,7 @@
   There is an archived version at https://github.com/arkenfox/user.js/issues/123
   if you want the full list since jesus
 
-  Last updated: 21-April-2025
+  Last updated: 2-November-2023
 
   Instructions:
   - [optional] close Firefox and backup your profile
@@ -35,13 +35,7 @@
 
   const aPREFS = [
     /* DEPRECATED */
-    /* 129-140 */
-    'media.ondevicechange.enabled', // 137
-    'webchannel.allowObject.urlWhitelist', // 132
     /* 116-128 */
-    'browser.contentanalysis.default_allow', // 127
-    'browser.messaging-system.whatsNewPanel.enabled', // 126
-    'browser.ping-centre.telemetry', // 123
     'dom.webnotifications.serviceworker.enabled', // 117
     'javascript.use_us_english_locale', // 119
     'layout.css.font-visibility.private', // 118
@@ -51,7 +45,6 @@
     'network.dns.skipTRR-when-parental-control-enabled', // 119
     'permissions.delegation.enabled', // 118
     'security.family_safety.mode', // 117
-    'widget.non-native-theme.enabled', // 127
     /* 103-115 */
     'browser.cache.offline.enable', // 115
     'extensions.formautofill.heuristics.enabled', // 114
@@ -74,29 +67,10 @@
     'security.ssl3.rsa_des_ede3_sha', // 93
 
     /* REMOVED */
-    /* 129-140 */
-    'dom.securecontext.allowlist_onions',
-    'network.http.referer.hideOnionSource',
-    'privacy.clearOnShutdown.cache',
-    'privacy.clearOnShutdown.cookies',
-    'privacy.clearOnShutdown.downloads',
-    'privacy.clearOnShutdown.formdata',
-    'privacy.clearOnShutdown.history',
-    'privacy.clearOnShutdown.offlineApps',
-    'privacy.clearOnShutdown.sessions',
-    'privacy.cpd.cache',
-    'privacy.cpd.cookies',
-    'privacy.cpd.formdata',
-    'privacy.cpd.history',
-    'privacy.cpd.offlineApps',
-    'privacy.cpd.sessions',
     /* 116-128 */
     'browser.fixup.alternate.enabled',
     'browser.taskbar.previews.enable',
     'browser.urlbar.dnsResolveSingleWordsAfterSearch',
-    'geo.provider.network.url',
-    'geo.provider.network.logging.enabled',
-    'geo.provider.use_gpsd',
     'media.gmp-widevinecdm.enabled',
     'network.protocol-handler.external.ms-windows-store',
     'privacy.partition.always_partition_third_party_non_cookie_storage',

updater.bat

@@ -3,7 +3,7 @@ TITLE arkenfox user.js updater
 
 REM ## arkenfox user.js updater for Windows
 REM ## author: @claustromaniac
-REM ## version: 4.20
+REM ## version: 4.19
 REM ## instructions: https://github.com/arkenfox/user.js/wiki/5.1-Updater-[Options]#-windows
 
 SET v=4.19
@@ -177,7 +177,7 @@ IF EXIST user.js.new (
 		IF DEFINED _singlebackup (
 			MOVE /Y user.js user.js.bak >nul
 		) ELSE (
-			FOR /F "delims=" %%# IN ('powershell -command get-date -format "{yyyyMMdd_HHmmss}"') DO @SET ldt=%%#
+			FOR /F "delims=" %%# IN ('powershell get-date -format "{yyyyMMdd_HHmmss}"') DO @SET ldt=%%#
 			MOVE /Y user.js "user-backup-!ldt!.js" >nul
 		)
 		REN user.js.new user.js

updater.sh

@@ -2,7 +2,7 @@
 
 ## arkenfox user.js updater for macOS and Linux
 
-## version: 4.0
+## version: 3.9
 ## Author: Pat Johnson (@overdodactyl)
 ## Additional contributors: @earthlng, @ema-pe, @claustromaniac, @infinitewarp
 
@@ -393,11 +393,11 @@ update_updater "$@"
 getProfilePath # updates PROFILE_PATH or exits on error
 cd "$PROFILE_PATH" || exit 1
 
-# Check if any files have the owner as root/wheel.
+# Check if any files have the owner/group as root/wheel.
-if [ -n "$(find ./ -user 0)" ]; then
+if [ -n "$(find ./ -user 0 -o -group 0)" ]; then
 	printf 'It looks like this script was previously run with elevated privileges,
 you will need to change ownership of the following files to your user:\n'
-	find . -user 0
+	find . -user 0 -o -group 0
 	cd "$CURRDIR"
 	exit 1
 fi

user.js

@@ -1,7 +1,7 @@
 /******
 *    name: arkenfox user.js
-*    date: 6 March 2025
+*    date: 20 November 2023
-* version: 135
+* version: 119
 *    urls: https://github.com/arkenfox/user.js [repo]
 *        : https://arkenfox.github.io/gui/ [interactive]
 * license: MIT: https://github.com/arkenfox/user.js/blob/master/LICENSE.txt
@@ -35,7 +35,7 @@
     - It is recommended to not use the updater, or you will get a later version which may cause issues.
       So you should manually append your overrides (and keep a copy), and manually update when you
       change ESR releases (arkenfox is already past that release)
-    - If you decide to keep updating, then the onus is on you - also see section 9999
+    - If you decide to keep updating, then the onus is on - also see section 9999
 
 * INDEX:
 
@@ -56,14 +56,12 @@
   2600: MISCELLANEOUS
   2700: ETP (ENHANCED TRACKING PROTECTION)
   2800: SHUTDOWN & SANITIZING
-  4000: FPP (fingerprintingProtection)
+  4500: RFP (resistFingerprinting)
-  4500: OPTIONAL RFP (resistFingerprinting)
   5000: OPTIONAL OPSEC
   5500: OPTIONAL HARDENING
   6000: DON'T TOUCH
   7000: DON'T BOTHER
   8000: DON'T BOTHER: FINGERPRINTING
-  8500: TELEMETRY
   9000: NON-PROJECT RELATED
   9999: DEPRECATED / RENAMED
 
@@ -83,7 +81,7 @@ user_pref("browser.aboutConfig.showWarning", false);
 user_pref("_user.js.parrot", "0100 syntax error: the parrot's dead!");
 /* 0102: set startup page [SETUP-CHROME]
  * 0=blank, 1=home, 2=last visited page, 3=resume previous session
- * [NOTE] Session Restore is cleared with history (2811+), and not used in Private Browsing mode
+ * [NOTE] Session Restore is cleared with history (2811), and not used in Private Browsing mode
  * [SETTING] General>Startup>Restore previous session ***/
 user_pref("browser.startup.page", 0);
 /* 0103: set HOME+NEWWINDOW page
@@ -96,17 +94,22 @@ user_pref("browser.startup.homepage", "about:blank");
 user_pref("browser.newtabpage.enabled", false);
 /* 0105: disable sponsored content on Firefox Home (Activity Stream)
  * [SETTING] Home>Firefox Home Content ***/
-user_pref("browser.newtabpage.activity-stream.showSponsored", false); // [FF58+]
+user_pref("browser.newtabpage.activity-stream.showSponsored", false); // [FF58+] Pocket > Sponsored Stories
-user_pref("browser.newtabpage.activity-stream.showSponsoredTopSites", false); // [FF83+] Shortcuts>Sponsored shortcuts
+user_pref("browser.newtabpage.activity-stream.showSponsoredTopSites", false); // [FF83+] Sponsored shortcuts
 /* 0106: clear default topsites
  * [NOTE] This does not block you from adding your own ***/
 user_pref("browser.newtabpage.activity-stream.default.sites", "");
 
 /*** [SECTION 0200]: GEOLOCATION ***/
 user_pref("_user.js.parrot", "0200 syntax error: the parrot's definitely deceased!");
+/* 0201: use Mozilla geolocation service instead of Google if permission is granted [FF74+]
+ * Optionally enable logging to the console (defaults to false) ***/
+user_pref("geo.provider.network.url", "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%");
+   // user_pref("geo.provider.network.logging.enabled", true); // [HIDDEN PREF]
 /* 0202: 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] [HIDDEN PREF]
 user_pref("geo.provider.use_geoclue", false); // [FF102+] [LINUX]
 
 /*** [SECTION 0300]: QUIETER FOX ***/
@@ -117,8 +120,8 @@ user_pref("extensions.getAddons.showPane", false); // [HIDDEN PREF]
 /* 0321: disable recommendations in about:addons' Extensions and Themes panes [FF68+] ***/
 user_pref("extensions.htmlaboutaddons.recommendations.enabled", false);
 /* 0322: disable personalized Extension Recommendations in about:addons and AMO [FF65+]
- * [NOTE] This pref has no effect when Health Reports (8501) are disabled
+ * [NOTE] This pref has no effect when Health Reports (0331) are disabled
- * [SETTING] Privacy & Security>Firefox Data Collection and Use>Allow personalized extension recommendations
+ * [SETTING] Privacy & Security>Firefox Data Collection & Use>Allow Firefox to make personalized extension recommendations
  * [1] https://support.mozilla.org/kb/personalized-extension-recommendations ***/
 user_pref("browser.discovery.enabled", false);
 /* 0323: disable shopping experience [FF116+]
@@ -126,13 +129,44 @@ user_pref("browser.discovery.enabled", false);
 user_pref("browser.shopping.experience2023.enabled", false); // [DEFAULT: false]
 
 /** TELEMETRY ***/
+/* 0330: disable new data submission [FF41+]
+ * If disabled, no policy is shown or upload takes place, ever
+ * [1] https://bugzilla.mozilla.org/1195552 ***/
+user_pref("datareporting.policy.dataSubmissionEnabled", false);
+/* 0331: disable Health Reports
+ * [SETTING] Privacy & Security>Firefox Data Collection & Use>Allow Firefox to send technical... data ***/
+user_pref("datareporting.healthreport.uploadEnabled", false);
+/* 0332: disable telemetry
+ * The "unified" pref affects the behavior of the "enabled" pref
+ * - If "unified" is false then "enabled" controls the telemetry module
+ * - If "unified" is true then "enabled" only controls whether to record extended data
+ * [NOTE] "toolkit.telemetry.enabled" is now LOCKED to reflect prerelease (true) or release builds (false) [2]
+ * [1] https://firefox-source-docs.mozilla.org/toolkit/components/telemetry/telemetry/internals/preferences.html
+ * [2] https://medium.com/georg-fritzsche/data-preference-changes-in-firefox-58-2d5df9c428b5 ***/
+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+]
+/* 0333: disable Telemetry Coverage
+ * [1] 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", "");
+/* 0334: disable PingCentre telemetry (used in several System Add-ons) [FF57+]
+ * Defense-in-depth: currently covered by 0331 ***/
+user_pref("browser.ping-centre.telemetry", false);
 /* 0335: disable Firefox Home (Activity Stream) telemetry ***/
 user_pref("browser.newtabpage.activity-stream.feeds.telemetry", false);
 user_pref("browser.newtabpage.activity-stream.telemetry", false);
 
 /** STUDIES ***/
 /* 0340: disable Studies
- * [SETTING] Privacy & Security>Firefox Data Collection and Use>Install and run studies ***/
+ * [SETTING] Privacy & Security>Firefox Data Collection & Use>Allow Firefox to install and run studies ***/
 user_pref("app.shield.optoutstudies.enabled", false);
 /* 0341: disable Normandy/Shield [FF60+]
  * Shield is a telemetry system that can push and test "recipes"
@@ -146,7 +180,7 @@ user_pref("breakpad.reportURL", "");
 user_pref("browser.tabs.crashReporting.sendReport", false); // [FF44+]
    // user_pref("browser.crashReports.unsubmittedCheck.enabled", false); // [FF51+] [DEFAULT: false]
 /* 0351: enforce no submission of backlogged Crash Reports [FF58+]
- * [SETTING] Privacy & Security>Firefox Data Collection and Use>Send backlogged crash reports  ***/
+ * [SETTING] Privacy & Security>Firefox Data Collection & Use>Allow Firefox to send backlogged crash reports  ***/
 user_pref("browser.crashReports.unsubmittedCheck.autoSubmit2", false); // [DEFAULT: false]
 
 /** OTHER ***/
@@ -204,7 +238,7 @@ user_pref("network.prefetch-next", false);
 /* 0602: disable DNS prefetching
  * [1] https://developer.mozilla.org/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control ***/
 user_pref("network.dns.disablePrefetch", true);
-user_pref("network.dns.disablePrefetchFromHTTPS", true);
+   // user_pref("network.dns.disablePrefetchFromHTTPS", true); // [DEFAULT: true]
 /* 0603: disable predictor / prefetching ***/
 user_pref("network.predictor.enabled", false);
 user_pref("network.predictor.enable-prefetch", false); // [FF48+] [DEFAULT: false]
@@ -234,7 +268,7 @@ user_pref("network.file.disable_unc_paths", true); // [HIDDEN PREF]
  * [1] https://bugzilla.mozilla.org/1433507
  * [2] https://en.wikipedia.org/wiki/GVfs
  * [3] https://en.wikipedia.org/wiki/GIO_(software) ***/
-user_pref("network.gio.supported-protocols", ""); // [HIDDEN PREF] [DEFAULT: ""]
+user_pref("network.gio.supported-protocols", ""); // [HIDDEN PREF] [DEFAULT: "" FF118+]
 /* 0705: disable proxy direct failover for system requests [FF91+]
  * [WARNING] Default true is a security feature against malicious extensions [1]
  * [SETUP-CHROME] If you use a proxy and you trust your extensions
@@ -252,7 +286,7 @@ user_pref("network.gio.supported-protocols", ""); // [HIDDEN PREF] [DEFAULT: ""]
  * [SETTING] Privacy & Security>DNS over HTTPS
  * [1] https://hacks.mozilla.org/2018/05/a-cartoon-intro-to-dns-over-https/
  * [2] https://wiki.mozilla.org/Security/DOH-resolver-policy
- * [3] https://support.mozilla.org/kb/firefox-dns-over-https
+ * [3] https://support.mozilla.org/en-US/kb/firefox-dns-over-https
  * [4] https://www.eff.org/deeplinks/2020/12/dns-doh-and-odoh-oh-my-year-review-2020 ***/
    // user_pref("network.trr.mode", 3);
 /* 0712: set DoH provider
@@ -268,16 +302,14 @@ user_pref("_user.js.parrot", "0800 syntax error: the parrot's ceased to be!");
  * [1] https://bugzilla.mozilla.org/1348275 ***/
 user_pref("browser.urlbar.speculativeConnect.enabled", false);
 /* 0802: disable location bar contextual suggestions
- * [NOTE] The UI is controlled by the .enabled pref
+ * [SETTING] Privacy & Security>Address Bar>Suggestions from...
- * [SETTING] Search>Address Bar>Suggestions from...
  * [1] https://blog.mozilla.org/data/2021/09/15/data-and-firefox-suggest/ ***/
-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+]
 /* 0803: disable live search suggestions
- * [NOTE] Both must be true for live search to work in the location bar
+ * [NOTE] Both must be true for the location bar to work
  * [SETUP-CHROME] Override these if you trust and use a privacy respecting search engine
- * [SETTING] Search>Show search suggestions | Show search suggestions in address bar results ***/
+ * [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);
 /* 0805: disable urlbar trending search suggestions [FF118+]
@@ -285,32 +317,26 @@ user_pref("browser.urlbar.suggest.searches", false);
 user_pref("browser.urlbar.trending.featureGate", false);
 /* 0806: disable urlbar suggestions ***/
 user_pref("browser.urlbar.addons.featureGate", false); // [FF115+]
-user_pref("browser.urlbar.fakespot.featureGate", false); // [FF130+] [DEFAULT: false]
 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+]
 /* 0807: disable urlbar clipboard suggestions [FF118+] ***/
-   // user_pref("browser.urlbar.clipboard.featureGate", false);
+   // user_pref("browser.urlbar.clipboard.featureGate", false); // [DEFAULT: false]
-/* 0808: disable recent searches [FF120+]
- * [NOTE] Recent searches are cleared with history (2811+)
- * [1] https://support.mozilla.org/kb/search-suggestions-firefox ***/
-   // user_pref("browser.urlbar.recentsearches.featureGate", false);
 /* 0810: disable search and form history
- * [NOTE] We also clear formdata on exit (2811+)
  * [SETUP-WEB] Be aware that autocomplete form data can be read by third parties [1][2]
+ * [NOTE] We also clear formdata on exit (2811)
  * [SETTING] Privacy & Security>History>Custom Settings>Remember search and form history
  * [1] https://blog.mindedsecurity.com/2011/10/autocompleteagain.html
  * [2] https://bugzilla.mozilla.org/381681 ***/
 user_pref("browser.formfill.enable", false);
 /* 0815: disable tab-to-search [FF85+]
  * Alternatively, you can exclude on a per-engine basis by unchecking them in Options>Search
- * [SETTING] Search>Address Bar>When using the address bar, suggest>Search engines ***/
+ * [SETTING] Privacy & Security>Address Bar>When using the address bar, suggest>Search engines ***/
    // user_pref("browser.urlbar.suggest.engines", false);
 /* 0820: disable coloring of visited links
  * [SETUP-HARDEN] Bulk rapid history sniffing was mitigated in 2010 [1][2]. Slower and more expensive
  * redraw timing attacks were largely mitigated in FF77+ [3]. Using RFP (4501) further hampers timing
- * attacks. Don't forget clearing history on exit (2811+). However, social engineering [2#limits][4][5]
+ * attacks. Don't forget clearing history on exit (2811). However, social engineering [2#limits][4][5]
  * and advanced targeted timing attacks could still produce usable results
  * [1] https://developer.mozilla.org/docs/Web/CSS/Privacy_and_the_:visited_selector
  * [2] https://dbaron.org/mozilla/visited-privacy
@@ -346,17 +372,14 @@ user_pref("network.auth.subresource-http-auth-allow", 1);
  * [SETTING] Privacy & Security>Logins and Passwords>Allow Windows single sign-on for...
  * [1] https://support.mozilla.org/kb/windows-sso ***/
    // user_pref("network.http.windows-sso.enabled", false); // [DEFAULT: false]
-/* 0907: enforce no automatic authentication on Microsoft sites [FF131+] [MAC]
- * On macOS, SSO only works on corporate devices ***/
-   // user_pref("network.http.microsoft-entra-sso.enabled", false); // [DEFAULT: false]
 
 /*** [SECTION 1000]: DISK AVOIDANCE ***/
 user_pref("_user.js.parrot", "1000 syntax error: the parrot's gone to meet 'is maker!");
 /* 1001: disable disk cache
- * [NOTE] We also clear cache on exit (2811+)
+ * [SETUP-CHROME] If you think disk cache helps perf, then feel free to override this
- * [SETUP-CHROME] If you think disk cache helps perf, then feel free to override this ***/
+ * [NOTE] We also clear cache on exit (2811) ***/
 user_pref("browser.cache.disk.enable", false);
-/* 1002: set media cache in Private Browsing to in-memory and increase its maximum size
+/* 1002: disable media cache from writing to disk in Private Browsing
  * [NOTE] MSE (Media Source Extensions) are already stored in-memory in PB ***/
 user_pref("browser.privatebrowsing.forceMediaMemoryCache", true); // [FF75+]
 user_pref("media.memory_cache_max_size", 65536);
@@ -388,7 +411,7 @@ user_pref("_user.js.parrot", "1200 syntax error: the parrot's a stiff!");
  * 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
  * [SETUP-WEB] SSL_ERROR_UNSAFE_NEGOTIATION: is it worth overriding this for that one site?
- * [STATS] SSL Labs (May 2024) reports over 99.7% of top sites have secure renegotiation [4]
+ * [STATS] SSL Labs (Nov 2023) reports over 99.5% of top sites have secure renegotiation [4]
  * [1] https://wiki.mozilla.org/Security:Renegotiation
  * [2] https://datatracker.ietf.org/doc/html/rfc5746
  * [3] https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3555
@@ -415,14 +438,13 @@ user_pref("security.tls.enable_0rtt_data", false);
  * [1] https://en.wikipedia.org/wiki/Ocsp ***/
 user_pref("security.OCSP.enabled", 1); // [DEFAULT: 1]
 /* 1212: set OCSP fetch failures (non-stapled, see 1211) to hard-fail
- * [SETUP-WEB] SEC_ERROR_OCSP_SERVER_ERROR | SEC_ERROR_OCSP_UNAUTHORIZED_REQUEST
+ * [SETUP-WEB] SEC_ERROR_OCSP_SERVER_ERROR
  * 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)
  * [1] https://blog.mozilla.org/security/2013/07/29/ocsp-stapling-in-firefox/
- * [2] https://www.imperialviolet.org/2014/04/19/revchecking.html
+ * [2] https://www.imperialviolet.org/2014/04/19/revchecking.html ***/
- * [3] https://letsencrypt.org/2024/12/05/ending-ocsp/ ***/
 user_pref("security.OCSP.require", true);
 
 /** CERTS / HPKP (HTTP Public Key Pinning) ***/
@@ -437,7 +459,7 @@ user_pref("security.cert_pinning.enforcement_level", 2);
  * 3 = consult CRLite and enforce "Not Revoked" results, but defer to OCSP for "Revoked" (default)
  * [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1429800,1670985,1753071
  * [2] https://blog.mozilla.org/security/tag/crlite/ ***/
-user_pref("security.remote_settings.crlite_filters.enabled", true); // [DEFAULT: true FF137+]
+user_pref("security.remote_settings.crlite_filters.enabled", true);
 user_pref("security.pki.crlite_mode", 2);
 
 /** MIXED CONTENT ***/
@@ -494,12 +516,6 @@ user_pref("privacy.userContext.ui.enabled", true);
  * [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);
-/* 1703: set external links to open in site-specific containers [FF123+]
- * [SETUP-WEB] Depending on your container extension(s) and their settings
- * true=Firefox will not choose a container (so your extension can)
- * false=Firefox will choose the container/no-container (default)
- * [1] https://bugzilla.mozilla.org/1874599 ***/
-   // user_pref("browser.link.force_default_user_context_id_for_external_opens", true);
 
 /*** [SECTION 2000]: PLUGINS / MEDIA / WEBRTC ***/
 user_pref("_user.js.parrot", "2000 syntax error: the parrot's snuffed it!");
@@ -507,7 +523,7 @@ user_pref("_user.js.parrot", "2000 syntax error: the parrot's snuffed it!");
 user_pref("media.peerconnection.ice.proxy_only_if_behind_proxy", true);
 /* 2003: force a single network interface for ICE candidates generation [FF42+]
  * When using a system-wide proxy, it uses the proxy interface
- * [1] https://developer.mozilla.org/docs/Web/API/RTCIceCandidate
+ * [1] https://developer.mozilla.org/en-US/docs/Web/API/RTCIceCandidate
  * [2] https://wiki.mozilla.org/Media/WebRTC/Privacy ***/
 user_pref("media.peerconnection.ice.default_address_only", true);
 /* 2004: force exclusion of private IPs from ICE candidates [FF51+]
@@ -542,6 +558,8 @@ user_pref("devtools.debugger.remote-enabled", false); // [DEFAULT: false]
 /* 2616: remove special permissions for certain mozilla domains [FF35+]
  * [1] resource://app/defaults/permissions ***/
 user_pref("permissions.manager.defaultsUrl", "");
+/* 2617: remove webchannel whitelist ***/
+user_pref("webchannel.allowObject.urlWhitelist", "");
 /* 2619: use Punycode in Internationalized Domain Names to eliminate possible spoofing
  * [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)
@@ -564,13 +582,6 @@ user_pref("pdfjs.disabled", false); // [DEFAULT: false]
 user_pref("pdfjs.enableScripting", false); // [FF86+]
 /* 2624: 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]
-/* 2630: disable content analysis by DLP (Data Loss Prevention) agents
- * DLP agents are background processes on managed computers that allow enterprises to monitor locally running
- * applications for data exfiltration events, which they can allow/block based on customer defined DLP policies.
- * 0=Block all requests, 1=Warn on all requests (which lets the user decide), 2=Allow all requests
- * [1] https://github.com/chromium/content_analysis_sdk */
-user_pref("browser.contentanalysis.enabled", false); // [FF121+] [DEFAULT: false]
-user_pref("browser.contentanalysis.default_result", 0); // [FF127+] [DEFAULT: 0]
 
 /** DOWNLOADS ***/
 /* 2651: enable user interaction for security by always asking where to download
@@ -615,123 +626,81 @@ user_pref("browser.contentblocking.category", "strict"); // [HIDDEN PREF]
  * Opener and redirect heuristics are granted for 30 days, see [3]
  * [1] https://blog.mozilla.org/security/2021/07/13/smartblock-v2/
  * [2] https://hg.mozilla.org/mozilla-central/rev/e5483fd469ab#l4.12
- * [3] https://developer.mozilla.org/docs/Web/Privacy/State_Partitioning#storage_access_heuristics ***/
+ * [3] https://developer.mozilla.org/en-US/docs/Web/Privacy/State_Partitioning#storage_access_heuristics ***/
    // user_pref("privacy.antitracking.enableWebcompat", false);
 
 /*** [SECTION 2800]: SHUTDOWN & SANITIZING ***/
 user_pref("_user.js.parrot", "2800 syntax error: the parrot's bleedin' demised!");
 /* 2810: enable Firefox to clear items on shutdown
- * [NOTE] In FF129+ clearing "siteSettings" on shutdown (2811+), or manually via site data (2820+) and
- * via history (2830), will no longer remove sanitize on shutdown "cookie and site data" site exceptions (2815)
  * [SETTING] Privacy & Security>History>Custom Settings>Clear history when Firefox closes | Settings ***/
 user_pref("privacy.sanitize.sanitizeOnShutdown", true);
 
 /** SANITIZE ON SHUTDOWN: IGNORES "ALLOW" SITE EXCEPTIONS ***/
-/* 2811: set/enforce clearOnShutdown items (if 2810 is true) [SETUP-CHROME] [FF128+] ***/
+/* 2811: set/enforce what items to clear on shutdown (if 2810 is true) [SETUP-CHROME]
-user_pref("privacy.clearOnShutdown_v2.cache", true); // [DEFAULT: true]
+ * [NOTE] If "history" is true, downloads will also be cleared
-user_pref("privacy.clearOnShutdown_v2.historyFormDataAndDownloads", true); // [DEFAULT: true]
+ * [NOTE] "sessions": Active Logins: refers to HTTP Basic Authentication [1], not logins via cookies
-   // user_pref("privacy.clearOnShutdown_v2.siteSettings", false); // [DEFAULT: false]
+ * [1] https://en.wikipedia.org/wiki/Basic_access_authentication ***/
-/* 2812: set/enforce clearOnShutdown items [FF136+] ***/
+user_pref("privacy.clearOnShutdown.cache", true);     // [DEFAULT: true]
-user_pref("privacy.clearOnShutdown_v2.browsingHistoryAndDownloads", true); // [DEFAULT: true]
+user_pref("privacy.clearOnShutdown.downloads", true); // [DEFAULT: true]
-user_pref("privacy.clearOnShutdown_v2.downloads", true);
+user_pref("privacy.clearOnShutdown.formdata", true);  // [DEFAULT: true]
-user_pref("privacy.clearOnShutdown_v2.formdata", true);
+user_pref("privacy.clearOnShutdown.history", true);   // [DEFAULT: true]
-/* 2813: set Session Restore to clear on shutdown (if 2810 is true) [FF34+]
+user_pref("privacy.clearOnShutdown.sessions", true);  // [DEFAULT: true]
- * [NOTE] Not needed if Session Restore is not used (0102) or it is already cleared with history (2811+)
+   // user_pref("privacy.clearOnShutdown.siteSettings", false); // [DEFAULT: false]
+/* 2812: set Session Restore to clear on shutdown (if 2810 is true) [FF34+]
+ * [NOTE] Not needed if Session Restore is not used (0102) or it is already cleared with history (2811)
  * [NOTE] If true, this prevents resuming from crashes (also see 5008) ***/
    // user_pref("privacy.clearOnShutdown.openWindows", true);
 
-/** SANITIZE ON SHUTDOWN: RESPECTS "ALLOW" SITE EXCEPTIONS ***/
+/** SANITIZE ON SHUTDOWN: RESPECTS "ALLOW" SITE EXCEPTIONS FF103+ ***/
-/* 2815: set "Cookies" and "Site Data" to clear on shutdown (if 2810 is true) [SETUP-CHROME] [FF128+]
+/* 2815: set "Cookies" and "Site Data" to clear on shutdown (if 2810 is true) [SETUP-CHROME]
- * [NOTE] Exceptions: For cross-domain logins, add exceptions for both sites
+ * [NOTE] Exceptions: A "cookie" block permission also controls "offlineApps" (see note below).
- * e.g. https://www.youtube.com (site) + https://accounts.google.com (single sign on)
+ * serviceWorkers require an "Allow" permission. For cross-domain logins, add exceptions for
+ * both sites e.g. https://www.youtube.com (site) + https://accounts.google.com (single sign on)
+ * [NOTE] "offlineApps": Offline Website Data: localStorage, service worker cache, QuotaManager (IndexedDB, asm-cache)
  * [WARNING] Be selective with what sites you "Allow", as they also disable partitioning (1767271)
  * [SETTING] to add site exceptions: Ctrl+I>Permissions>Cookies>Allow (when on the website in question)
  * [SETTING] to manage site exceptions: Options>Privacy & Security>Permissions>Settings ***/
-user_pref("privacy.clearOnShutdown_v2.cookiesAndStorage", true);
+user_pref("privacy.clearOnShutdown.cookies", true); // Cookies
+user_pref("privacy.clearOnShutdown.offlineApps", true); // Site Data
 
-/** SANITIZE SITE DATA: IGNORES "ALLOW" SITE EXCEPTIONS ***/
+/** SANITIZE MANUAL: IGNORES "ALLOW" SITE EXCEPTIONS ***/
-/* 2820: set manual "Clear Data" items [SETUP-CHROME] [FF128+]
+/* 2820: 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
- * [SETTING] Privacy & Security>Browser Privacy>Cookies and Site Data>Clear Data ***/
+ * [NOTE] Regardless of what you set "downloads" to, as soon as the dialog
-user_pref("privacy.clearSiteData.cache", true);
+ * for "Clear Recent History" is opened, it is synced to the same as "history" ***/
-user_pref("privacy.clearSiteData.cookiesAndStorage", false); // keep false until it respects "allow" site exceptions
+user_pref("privacy.cpd.cache", true);    // [DEFAULT: true]
-user_pref("privacy.clearSiteData.historyFormDataAndDownloads", true);
+user_pref("privacy.cpd.formdata", true); // [DEFAULT: true]
-   // user_pref("privacy.clearSiteData.siteSettings", false);
+user_pref("privacy.cpd.history", true);  // [DEFAULT: true]
-/* 2821: set manual "Clear Data" items [FF136+] ***/
+user_pref("privacy.cpd.sessions", true); // [DEFAULT: true]
-user_pref("privacy.clearSiteData.browsingHistoryAndDownloads", true);
+user_pref("privacy.cpd.offlineApps", false); // [DEFAULT: false]
-user_pref("privacy.clearSiteData.formdata", true);
+user_pref("privacy.cpd.cookies", false);
-
+   // user_pref("privacy.cpd.downloads", true); // not used, see note above
-/** SANITIZE HISTORY: IGNORES "ALLOW" SITE EXCEPTIONS ***/
+   // user_pref("privacy.cpd.openWindows", false); // Session Restore
-/* 2830: set manual "Clear History" items, also via Ctrl-Shift-Del [SETUP-CHROME] [FF128+]
+   // user_pref("privacy.cpd.passwords", false);
- * Firefox remembers your last choices. This will reset them when you start Firefox
+   // user_pref("privacy.cpd.siteSettings", false);
- * [SETTING] Privacy & Security>History>Custom Settings>Clear History ***/
+/* 2822: reset default "Time range to clear" for "Clear Recent History" (2820)
-user_pref("privacy.clearHistory.cache", true); // [DEFAULT: true]
-user_pref("privacy.clearHistory.cookiesAndStorage", false);
-user_pref("privacy.clearHistory.historyFormDataAndDownloads", true); // [DEFAULT: true]
-   // user_pref("privacy.clearHistory.siteSettings", false); // [DEFAULT: false]
-/* 2831: set manual "Clear History" items [FF136+] ***/
-user_pref("privacy.clearHistory.browsingHistoryAndDownloads", true); // [DEFAULT: true]
-user_pref("privacy.clearHistory.formdata", true);
-
-/** SANITIZE MANUAL: TIMERANGE ***/
-/* 2840: set "Time range to clear" for "Clear Data" (2820+) and "Clear History" (2830+)
  * 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
  * [NOTE] Values 5 (last 5 minutes) and 6 (last 24 hours) are not listed in the dropdown,
  * which will display a blank value, and are not guaranteed to work ***/
 user_pref("privacy.sanitize.timeSpan", 0);
 
-/*** [SECTION 4000]: FPP (fingerprintingProtection)
+/*** [SECTION 4500]: RFP (resistFingerprinting)
-   RFP (4501) overrides FPP
+   RFP covers a wide range of ongoing fingerprinting solutions.
-
+   It is an all-or-nothing buy in: you cannot pick and choose what parts you want
-   In FF118+ FPP is on by default in private windows (4001) and in FF119+ is controlled
+   [TEST] https://arkenfox.github.io/TZP/tzp.html
-   by ETP (2701). FPP will also use Remote Services in future to relax FPP protections
-   on a per site basis for compatibility (4004).
-
-   https://searchfox.org/mozilla-central/source/toolkit/components/resistfingerprinting/RFPTargetsDefault.inc
-
-   [NOTE] RFPTargets + granular overrides are somewhat experimental and may produce unexpected results
-   - e.g. FrameRate can only be controlled per process, not per origin
-
-   1826408 - restrict fonts to system (kBaseFonts + kLangPackFonts) (Windows, Mac, some Linux)
-      https://searchfox.org/mozilla-central/search?path=StandardFonts*.inc
-   1858181 - subtly randomize canvas per eTLD+1, per session and per window-mode (FF120+)
-***/
-user_pref("_user.js.parrot", "4000 syntax error: the parrot's bereft of life!");
-/* 4001: enable FPP in PB mode [FF114+]
- * [NOTE] In FF119+, FPP for all modes (7016) is enabled with ETP Strict (2701) ***/
-   // user_pref("privacy.fingerprintingProtection.pbmode", true); // [DEFAULT: true]
-/* 4002: set global FPP overrides [FF114+]
- * uses "RFPTargets" [1] which despite the name these are not used by RFP
- * e.g. "+AllTargets,-CSSPrefersColorScheme,-JSDateTimeUTC" = all targets but allow prefers-color-scheme and do not change timezone
- * e.g. "-AllTargets,+CanvasRandomization,+JSDateTimeUTC" = no targets but do use FPP canvas and change timezone
- * [NOTE] Not supported by arkenfox. Either use RFP or FPP at defaults
- * [1] https://searchfox.org/mozilla-central/source/toolkit/components/resistfingerprinting/RFPTargets.inc ***/
-   // user_pref("privacy.fingerprintingProtection.overrides", "");
-/* 4003: set granular FPP overrides
- * JSON format: e.g."[{\"firstPartyDomain\": \"netflix.com\", \"overrides\": \"-CanvasRandomization,-FrameRate,\"}]"
- * [NOTE] Not supported by arkenfox. Either use RFP or FPP at defaults ***/
-   // user_pref("privacy.fingerprintingProtection.granularOverrides", "");
-/* 4004: disable remote FPP overrides [FF127+] ***/
-   // user_pref("privacy.fingerprintingProtection.remoteOverrides.enabled", false);
-
-/*** [SECTION 4500]: OPTIONAL RFP (resistFingerprinting)
-   RFP overrides FPP (4000)
-
-   FF128+ Arkenfox by default uses FPP (automatically enabled with ETP Strict). For most people
-   this is all you need. To use RFP instead, add RFP (4501) to your overrides, and optionally
-   add letterboxing (4504), spoof_english (4506), and webgl (4520).
-
-   RFP is an all-or-nothing buy in: you cannot pick and choose what parts you want
 
    [WARNING] DO NOT USE extensions to alter RFP protected metrics
 
     418986 - limit window.screen & CSS media queries (FF41)
+   1281949 - spoof screen orientation (FF50)
+   1330890 - spoof timezone as UTC0 (FF55)
    1360039 - spoof navigator.hardwareConcurrency as 2 (FF55)
  FF56
    1333651 - spoof User Agent & Navigator API
-      JS: spoofed as Windows 10, OS 10.15, Android 10, or Linux
+      version: android version spoofed as ESR (FF119 or lower)
-      HTTP Header: spoofed as Windows 10 or Android 10.15 until FF136 then matches JS spoof
+      OS: JS spoofed as Windows 10, OS 10.15, Android 10, or Linux | HTTP Headers spoofed as Windows or Android
    1369319 - disable device sensor API
    1369357 - disable site specific zoom
    1337161 - hide gamepads from content
@@ -746,14 +715,14 @@ user_pref("_user.js.parrot", "4000 syntax error: the parrot's bereft of life!");
    1372073 - spoof/block fingerprinting in MediaDevices API (FF59)
       Spoof: enumerate devices as one "Internal Camera" and one "Internal Microphone"
       Block: suppresses the ondevicechange event
-   1039069 - warn when language prefs are not set to "en*" (FF59)
+   1039069 - warn when language prefs are not set to "en*" (also see 0210, 0211) (FF59)
    1222285 & 1433592 - spoof keyboard events and suppress keyboard modifier events (FF59)
       Spoofing mimics the content language of the document. Currently it only supports en-US.
       Modifier events suppressed are SHIFT and both ALT keys. Chrome is not affected.
    1337157 - disable WebGL debug renderer info (FF60)
    1459089 - disable OS locale in HTTP Accept-Language headers (ANDROID) (FF62)
    1479239 - return "no-preference" with prefers-reduced-motion (FF63)
-   1363508 & 1826051 - spoof/suppress Pointer Events (FF64, FF132)
+   1363508 - spoof/suppress Pointer Events (FF64)
    1492766 - spoof pointerEvent.pointerid (FF65)
    1485266 - disable exposure of system colors to CSS or canvas (FF67)
    1494034 - return "light" with prefers-color-scheme (FF67)
@@ -769,24 +738,16 @@ user_pref("_user.js.parrot", "4000 syntax error: the parrot's bereft of life!");
    1692609 - reduce JS timing precision to 16.67ms (previously FF55+ was 100ms) (FF102)
    1422237 - return "srgb" with color-gamut (FF110)
    1794628 - return "none" with inverted-colors (FF114)
-   1787790 - normalize system fonts (FF128)
-   1835987 - spoof timezone as Atlantic/Reykjavik (previously FF55+ was UTC) (FF128)
-   1834307 - always use smooth scrolling (FF132)
-   1918202 - spoof screen orientation based on spoofed screen size and platform (FF132)
-      previously it always returned landscape-primary and an angle of 0 (FF50+)
-   1390465 - load all subtitles in WebVTT (Video Text Tracks) (FF133)
-   1873382 - make spoofed devicePixelRatio and CSS media queries match (FF133)
-      previously FF41+ devicePixelRatio was hardcoded as 1 and FF127+ as 2
-      previously FF41+ CSS media queries were spoofed as zoom level at a devicePixelRatio of 1
 ***/
 user_pref("_user.js.parrot", "4500 syntax error: the parrot's popped 'is clogs");
 /* 4501: enable RFP
+ * [SETUP-WEB] RFP can cause some website breakage: mainly canvas, use a canvas site exception via the urlbar
+ * RFP also has a few side effects: mainly timezone is UTC0, and websites will prefer light theme
  * [NOTE] pbmode applies if true and the original pref is false
- * [SETUP-WEB] RFP can cause some website breakage: mainly canvas, use a canvas site exception via the urlbar.
+ * [1] https://bugzilla.mozilla.org/418986 ***/
- * RFP also has a few side effects: mainly that timezone is GMT, and websites will prefer light theme ***/
+user_pref("privacy.resistFingerprinting", true); // [FF41+]
-   // user_pref("privacy.resistFingerprinting", true); // [FF41+]
    // user_pref("privacy.resistFingerprinting.pbmode", true); // [FF114+]
-/* 4502: set RFP new window size max rounded values [FF55+]
+/* 4502: set new window size rounding max values [FF55+]
  * [SETUP-CHROME] sizes round down in hundreds: width to 200s and height to 100s, to fit your screen
  * [1] https://bugzilla.mozilla.org/1330882 ***/
 user_pref("privacy.window.maxInnerWidth", 1600);
@@ -795,7 +756,7 @@ user_pref("privacy.window.maxInnerHeight", 900);
  * [NOTE] To allow extensions to work on AMO, you also need 2662
  * [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1384330,1406795,1415644,1453988 ***/
 user_pref("privacy.resistFingerprinting.block_mozAddonManager", true);
-/* 4504: enable letterboxing [FF67+]
+/* 4504: enable RFP letterboxing [FF67+]
  * Dynamically resizes the inner window by applying margins in stepped ranges [2]
  * If you use the dimension pref, then it will only apply those resolutions.
  * The format is "width1xheight1, width2xheight2, ..." (e.g. "800x600, 1000x1000")
@@ -803,36 +764,36 @@ user_pref("privacy.resistFingerprinting.block_mozAddonManager", true);
  * dislike the margins, then flip this pref, keeping in mind that it is effectively fingerprintable
  * [WARNING] DO NOT USE: the dimension pref is only meant for testing
  * [1] https://bugzilla.mozilla.org/1407366
- * [2] https://hg.mozilla.org/mozilla-central/rev/7211cb4f58ff#l5.13 ***/
+ * [2] https://hg.mozilla.org/mozilla-central/rev/6d2d7856e468#l2.32 ***/
-   // user_pref("privacy.resistFingerprinting.letterboxing", true); // [HIDDEN PREF]
+user_pref("privacy.resistFingerprinting.letterboxing", true); // [HIDDEN PREF]
    // user_pref("privacy.resistFingerprinting.letterboxing.dimensions", ""); // [HIDDEN PREF]
-/* 4505: disable RFP by domain [FF91+]
+/* 4505: experimental RFP [FF91+]
- * [NOTE] Working examples: "arkenfox.github.io", "*github.io"
+ * [WARNING] DO NOT USE unless testing, see [1] comment 12
- * Non-working examples: "https://arkenfox.github.io", "github.io", "*arkenfox.github.io" ***/
+ * [1] https://bugzilla.mozilla.org/1635603 ***/
    // user_pref("privacy.resistFingerprinting.exemptedDomains", "*.example.invalid");
-/* 4506: disable RFP spoof english prompt [FF59+]
- * 0=prompt, 1=disabled, 2=enabled
- * [NOTE] When changing from value 2, preferred languages ('intl.accept_languages') is not reset.
- * [SETUP-WEB] when enabled, sets 'en-US, en' for displaying pages and 'en-US' as locale.
- * [SETTING] General>Language>Choose your preferred language for displaying pages>Choose>Request English... ***/
-user_pref("privacy.spoof_english", 1);
 /* 4510: disable using system colors
  * [SETTING] General>Language and Appearance>Fonts and Colors>Colors>Use system colors ***/
 user_pref("browser.display.use_system_colors", false); // [DEFAULT: false NON-WINDOWS]
-/* 4511: disable using system accent colors ***/
+/* 4511: enforce non-native widget theme
-user_pref("widget.non-native-theme.use-theme-accent", false); // [DEFAULT: false WINDOWS]
+ * Security: removes/reduces system API calls, e.g. win32k API [1]
+ * Fingerprinting: provides a uniform look and feel across platforms [2]
+ * [1] https://bugzilla.mozilla.org/1381938
+ * [2] https://bugzilla.mozilla.org/1411425 ***/
+user_pref("widget.non-native-theme.enabled", true); // [DEFAULT: true]
 /* 4512: enforce links targeting new windows to open in a new tab instead
  * 1=most recent window or tab, 2=new window, 3=new tab
  * Stops malicious window sizes and some screen resolution leaks.
  * You can still right-click a link and open in a new window
  * [SETTING] General>Tabs>Open links in tabs instead of new windows
+ * [TEST] https://arkenfox.github.io/TZP/tzp.html#screen
  * [1] https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/9881 ***/
 user_pref("browser.link.open_newwindow", 3); // [DEFAULT: 3]
 /* 4513: set all open window methods to abide by "browser.link.open_newwindow" (4512)
  * [1] https://searchfox.org/mozilla-central/source/dom/tests/browser/browser_test_new_window_from_content.js ***/
 user_pref("browser.link.open_newwindow.restriction", 0);
-/* 4520: disable WebGL (Web Graphics Library) ***/
+/* 4520: disable WebGL (Web Graphics Library)
-   // user_pref("webgl.disabled", true);
+ * [SETUP-WEB] If you need it then override it. RFP still randomizes canvas for naive scripts ***/
+user_pref("webgl.disabled", true);
 
 /*** [SECTION 5000]: OPTIONAL OPSEC
    Disk avoidance, application data isolation, eyeballs...
@@ -881,7 +842,7 @@ user_pref("_user.js.parrot", "5000 syntax error: the parrot's taken 'is last bow
  * [1] https://bugzilla.mozilla.org/1281959 ***/
    // user_pref("browser.download.forbid_open_with", true);
 /* 5010: disable location bar suggestion types
- * [SETTING] Search>Address Bar>When using the address bar, suggest ***/
+ * [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);
@@ -893,7 +854,7 @@ user_pref("_user.js.parrot", "5000 syntax error: the parrot's taken 'is last bow
  * [1] https://support.mozilla.org/kb/address-bar-autocomplete-firefox#w_url-autocomplete ***/
    // user_pref("browser.urlbar.autoFill", false);
 /* 5013: disable browsing and download history
- * [NOTE] We also clear history and downloads on exit (2811+)
+ * [NOTE] We also clear history and downloads on exit (2811)
  * [SETTING] Privacy & Security>History>Custom Settings>Remember browsing and download history ***/
    // user_pref("places.history.enabled", false);
 /* 5014: disable Windows jumplist [WINDOWS] ***/
@@ -945,7 +906,7 @@ user_pref("_user.js.parrot", "5500 syntax error: this is an ex-parrot!");
  * [2] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=asm.js
  * [3] https://rh0dev.github.io/blog/2017/the-return-of-the-jit/ ***/
    // user_pref("javascript.options.asmjs", false);
-/* 5505: disable Ion and baseline JIT to harden against JS exploits [RESTART]
+/* 5505: disable Ion and baseline JIT to harden against JS exploits
  * [NOTE] When both Ion and JIT are disabled, and trustedprincipals
  * is enabled, then Ion can still be used by extensions (1599226)
  * [1] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=firefox+jit
@@ -974,8 +935,8 @@ user_pref("_user.js.parrot", "5500 syntax error: this is an ex-parrot!");
 /* 5509: disable IPv6 if using a VPN
  * This is an application level fallback. Disabling IPv6 is best done at an OS/network
  * level, and/or configured properly in system wide VPN setups.
- * [NOTE] PHP defaults to IPv6 with "localhost". Use "php -S 127.0.0.1:PORT"
  * [SETUP-WEB] PR_CONNECT_RESET_ERROR
+ * [NOTE] PHP defaults to IPv6 with "localhost". Use "php -S 127.0.0.1:PORT"
  * [TEST] https://ipleak.org/
  * [1] https://www.internetsociety.org/tag/ipv6-security/ (Myths 2,4,5,6) ***/
    // user_pref("network.dns.disableIPv6", true);
@@ -1018,20 +979,13 @@ user_pref("extensions.webcompat-reporter.enabled", false); // [DEFAULT: false]
 /* 6012: enforce Quarantined Domains [FF115+]
  * [WHY] https://support.mozilla.org/kb/quarantined-domains */
 user_pref("extensions.quarantinedDomains.enabled", true); // [DEFAULT: true]
-/* 6050: prefsCleaner: reset previously active items removed from arkenfox FF128+ ***/
+/* 6050: prefsCleaner: previously active items removed from arkenfox 115-127 ***/
-   // user_pref("privacy.clearOnShutdown.cache", "");
+   // user_pref("accessibility.force_disabled", "");
-   // user_pref("privacy.clearOnShutdown.cookies", "");
+   // user_pref("browser.urlbar.dnsResolveSingleWordsAfterSearch", "");
-   // user_pref("privacy.clearOnShutdown.downloads", "");
+   // user_pref("network.protocol-handler.external.ms-windows-store", "");
-   // user_pref("privacy.clearOnShutdown.formdata", "");
+   // user_pref("privacy.partition.always_partition_third_party_non_cookie_storage", "");
-   // user_pref("privacy.clearOnShutdown.history", "");
+   // user_pref("privacy.partition.always_partition_third_party_non_cookie_storage.exempt_sessionstorage", "");
-   // user_pref("privacy.clearOnShutdown.offlineApps", "");
+   // user_pref("privacy.partition.serviceWorkers", "");
-   // user_pref("privacy.clearOnShutdown.sessions", "");
-   // user_pref("privacy.cpd.cache", "");
-   // user_pref("privacy.cpd.cookies", "");
-   // user_pref("privacy.cpd.formdata", "");
-   // user_pref("privacy.cpd.history", "");
-   // user_pref("privacy.cpd.offlineApps", "");
-   // user_pref("privacy.cpd.sessions", "");
 
 /*** [SECTION 7000]: DON'T BOTHER ***/
 user_pref("_user.js.parrot", "7000 syntax error: the parrot's pushing up daisies!");
@@ -1072,6 +1026,10 @@ user_pref("_user.js.parrot", "7000 syntax error: the parrot's pushing up daisies
  * [WHY] Passive fingerprinting and perf costs. These are session-only
  * and isolated with network partitioning (FF85+) and/or containers ***/
    // user_pref("security.ssl.disable_session_identifiers", true);
+/* 7006: onions
+ * [WHY] Firefox doesn't support hidden services. Use Tor Browser ***/
+   // user_pref("dom.securecontext.allowlist_onions", true); // [FF97+] 1382359/1744006
+   // user_pref("network.http.referer.hideOnionSource", true); // 1305144
 /* 7007: referers
  * [WHY] Only cross-origin referers (1602, 5510) matter ***/
    // user_pref("network.http.sendRefererHeader", 2);
@@ -1108,12 +1066,10 @@ user_pref("_user.js.parrot", "7000 syntax error: the parrot's pushing up daisies
  * [NOTE] FPP (fingerprintingProtection) is ignored when RFP (4501) is enabled
  * [WHY] Arkenfox only supports strict (2701) which sets these at runtime ***/
    // user_pref("network.cookie.cookieBehavior", 5); // [DEFAULT: 5]
-   // user_pref("network.cookie.cookieBehavior.optInPartitioning", true); // [ETP FF132+]
+   // user_pref("privacy.fingerprintingProtection", true); // [FF114+] [ETP FF119+]
    // user_pref("network.http.referer.disallowCrossSiteRelaxingDefault", true);
    // user_pref("network.http.referer.disallowCrossSiteRelaxingDefault.top_navigation", true); // [FF100+]
-   // user_pref("privacy.bounceTrackingProtection.mode", 1); // [FF131+] [ETP FF133+]
+   // user_pref("privacy.partition.network_state.ocsp_cache", true);
-   // user_pref("privacy.fingerprintingProtection", true); // [FF114+] [ETP FF119+]
-   // user_pref("privacy.partition.network_state.ocsp_cache", true); // [DEFAULT: true]
    // user_pref("privacy.query_stripping.enabled", true); // [FF101+]
    // user_pref("privacy.trackingprotection.enabled", true);
    // user_pref("privacy.trackingprotection.socialtracking.enabled", true);
@@ -1127,7 +1083,7 @@ user_pref("_user.js.parrot", "7000 syntax error: the parrot's pushing up daisies
  * [1] https://blog.mozilla.org/en/products/firefox/block-notification-requests/ ***/
    // user_pref("dom.webnotifications.enabled", false);
 /* 7019: disable Push Notifications [FF44+]
- * [WHY] Website "push" requires subscription, and the API is required for CRLite (1224)
+ * [WHY] Push requires subscription
  * [NOTE] To remove all subscriptions, reset "dom.push.userAgentID"
  * [1] https://support.mozilla.org/kb/push-notifications-firefox ***/
    // user_pref("dom.push.enabled", false);
@@ -1138,10 +1094,6 @@ user_pref("_user.js.parrot", "7000 syntax error: the parrot's pushing up daisies
  * [1] https://groups.google.com/g/discuss-webrtc/c/6stQXi72BEU/m/2FwZd24UAQAJ
  * [2] https://datatracker.ietf.org/doc/html/draft-ietf-mmusic-mdns-ice-candidates#section-3.1.1 ***/
    // user_pref("media.peerconnection.enabled", false);
-/* 7021: enable GPC (Global Privacy Control) in non-PB windows
- * [WHY] Passive and active fingerprinting. Mostly redundant with Tracking Protection
- * in ETP Strict (2701) and sanitizing on close (2800s) ***/
-   // user_pref("privacy.globalprivacycontrol.enabled", true);
 
 /*** [SECTION 8000]: DON'T BOTHER: FINGERPRINTING
    [WHY] They are insufficient to help anti-fingerprinting and do more harm than good
@@ -1172,58 +1124,6 @@ user_pref("_user.js.parrot", "8000 syntax error: the parrot's crossed the Jordan
    // user_pref("ui.use_standins_for_native_colors", "");
    // user_pref("webgl.enable-debug-renderer-info", "");
 
-/*** [SECTION 8500]: TELEMETRY
-   Arkenfox does not consider Firefox telemetry to be a privacy or security concern - comments below.
-   But since most arkenfox users prefer it disabled, we'll do that rather than cause overrides.
-
-   Opt-out
-   - Telemetry is essential: a browser engine is a _very_ large complex beast costing billions to maintain
-   - Opt-in telemetry _does not_ work and results in data that is unrepresentative and may be misleading
-   Choice
-   - Every new profile on first use provides data collection/use policy and the abillty to opt-out
-   - It can be disabled at any time (Settings>Privacy & Security>Data Collection and Use) 
-   Data
-   - no PII (Personally Identifiable Information)
-   - can be viewed in about:telemetry
-   - uses Prio [1][2][3], Glean [4], Oblivious HTTP [5][6]
-
-   [1] https://crypto.stanford.edu/prio/
-   [2] https://hacks.mozilla.org/2018/10/testing-privacy-preserving-telemetry-with-prio/
-   [3] https://blog.mozilla.org/security/2019/06/06/next-steps-in-privacy-preserving-telemetry-with-prio/
-   [4] https://firefox-source-docs.mozilla.org/toolkit/components/glean/index.html
-   [5] https://firefox-source-docs.mozilla.org/toolkit/components/glean/user/ohttp.html
-   [6] https://blog.mozilla.org/en/tag/oblivious-http/
-***/
-user_pref("_user.js.parrot", "8500 syntax error: the parrot's off the twig!");
-/* 8500: disable new data submission [FF41+]
- * If disabled, no policy is shown or upload takes place, ever
- * [1] https://bugzilla.mozilla.org/1195552 ***/
-user_pref("datareporting.policy.dataSubmissionEnabled", false);
-/* 8501: disable Health Reports
- * [SETTING] Privacy & Security>Firefox Data Collection and Use>Send technical... data ***/
-user_pref("datareporting.healthreport.uploadEnabled", false);
-/* 0802: disable telemetry
- * The "unified" pref affects the behavior of the "enabled" pref
- * - If "unified" is false then "enabled" controls the telemetry module
- * - If "unified" is true then "enabled" only controls whether to record extended data
- * [NOTE] "toolkit.telemetry.enabled" is now LOCKED to reflect prerelease (true) or release builds (false) [2]
- * [1] https://firefox-source-docs.mozilla.org/toolkit/components/telemetry/telemetry/internals/preferences.html
- * [2] https://medium.com/georg-fritzsche/data-preference-changes-in-firefox-58-2d5df9c428b5 ***/
-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+]
-/* 8503: disable Telemetry Coverage
- * [1] 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", "");
-
 /*** [SECTION 9000]: NON-PROJECT RELATED ***/
 user_pref("_user.js.parrot", "9000 syntax error: the parrot's cashed in 'is chips!");
 /* 9001: disable welcome notices ***/
@@ -1231,18 +1131,60 @@ user_pref("browser.startup.homepage_override.mstone", "ignore"); // [HIDDEN PREF
 /* 9002: disable General>Browsing>Recommend extensions/features as you browse [FF67+] ***/
 user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons", false);
 user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features", false);
+/* 9003: disable What's New toolbar icon [FF69+] ***/
+user_pref("browser.messaging-system.whatsNewPanel.enabled", false);
 /* 9004: disable search terms [FF110+]
  * [SETTING] Search>Search Bar>Use the address bar for search and navigation>Show search terms instead of URL... ***/
 user_pref("browser.urlbar.showSearchTerms.enabled", false);
 
 /*** [SECTION 9999]: DEPRECATED / RENAMED ***/
 user_pref("_user.js.parrot", "9999 syntax error: the parrot's shuffled off 'is mortal coil!");
-/* ESR128.x still uses all the following prefs
+/* ESR115.x still uses all the following prefs
 // [NOTE] replace the * with a slash in the line above to re-enable active ones
-// FF132
+// FF116
-/* 2617: remove webchannel whitelist
+// 4506: set RFP's font visibility level (1402) [FF94+]
-   // [-] https://bugzilla.mozilla.org/1275612
+   // [-] https://bugzilla.mozilla.org/1838415
-   // user_pref("webchannel.allowObject.urlWhitelist", "");
+   // user_pref("layout.css.font-visibility.resistFingerprinting", 1); // [DEFAULT: 1]
+// FF117
+// 1221: disable Windows 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
+   // [1] https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/21686
+   // [-] https://bugzilla.mozilla.org/1844908
+user_pref("security.family_safety.mode", 0);
+// 7018: disable service worker Web Notifications [FF44+]
+   // [WHY] Web Notifications are behind a prompt (7002)
+   // [1] https://blog.mozilla.org/en/products/firefox/block-notification-requests/
+   // [-] https://bugzilla.mozilla.org/1842457
+   // user_pref("dom.webnotifications.serviceworker.enabled", false);
+// FF118
+// 1402: limit font visibility (Windows, Mac, some Linux) [FF94+]
+   // Uses hardcoded lists with two parts: kBaseFonts + kLangPackFonts [1], bundled fonts are auto-allowed
+   // In normal windows: uses the first applicable: RFP over TP over Standard
+   // In Private Browsing windows: uses the most restrictive between normal and private
+   // 1=only base system fonts, 2=also fonts from optional language packs, 3=also user-installed fonts
+   // [1] https://searchfox.org/mozilla-central/search?path=StandardFonts*.inc
+   // [-] https://bugzilla.mozilla.org/1847599
+   // user_pref("layout.css.font-visibility.private", 1);
+   // user_pref("layout.css.font-visibility.standard", 1);
+   // user_pref("layout.css.font-visibility.trackingprotection", 1);
+// 2623: 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
+   // [1] https://groups.google.com/forum/#!topic/mozilla.dev.platform/BdFOMAuCGW8/discussion
+   // [-] https://bugzilla.mozilla.org/1697151
+   // user_pref("permissions.delegation.enabled", false);
+// FF119
+// 0211: use en-US locale regardless of the system or region locale
+   // [SETUP-WEB] May break some input methods e.g xim/ibus for CJK languages [1]
+   // [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=867501,1629630
+   // [-] https://bugzilla.mozilla.org/1846224
+   // user_pref("javascript.use_us_english_locale", true); // [HIDDEN PREF]
+// 0711: disable skipping DoH when parental controls are enabled [FF70+]
+   // [-] https://bugzilla.mozilla.org/1586941
+user_pref("network.dns.skipTRR-when-parental-control-enabled", false);
 // ***/
 
 /* END: internal custom pref to test for syntax errors ***/