75-beta

browser.search.geoip.url is deprecated in 75, the prefs are only used on first run, and we don't mess with search engines as that is a user choice

scratchpad-scripts/ghacks-clear-[removed].js

@@ -1,7 +1,7 @@
 /***
  This will reset the preferences that have been removed completely from the ghacks user.js.
 
- Last updated: 19-December-2019
+ Last updated: 12-April-2020
 
  For instructions see:
  https://github.com/ghacksuserjs/ghacks-user.js/wiki/3.1-Resetting-Inactive-Prefs-[Scripts]
@@ -218,6 +218,9 @@
     /* 71-beta */
     'media.block-autoplay-until-in-foreground',
     'middlemouse.paste',
+    /* 75-beta */
+    'browser.search.geoip.url',
+    'browser.search.region',
     /* reset parrot: check your open about:config after running the script */
     '_user.js.parrot'
   ]

user.js

@@ -1,13 +1,13 @@
 /******
 * name: ghacks user.js
-* date: 11 March 2020
+* date: 15 April 2020
-* version 73
+* version 75-beta
 * authors: v52+ github | v51- www.ghacks.net
 * url: https://github.com/ghacksuserjs/ghacks-user.js
 * license: MIT: https://github.com/ghacksuserjs/ghacks-user.js/blob/master/LICENSE.txt
 
 * releases: These are end-of-stable-life-cycle legacy archives.
-            *Always* use the master branch user.js for a current up-to-date version.
+            *Always* use the master branch user.js for a current up-to-date version
        url: https://github.com/ghacksuserjs/ghacks-user.js/releases
 
 * README:
@@ -150,20 +150,14 @@ user_pref("_user.js.parrot", "0200 syntax error: the parrot's definitely decease
  * [SETTING] to add site exceptions: Page Info>Permissions>Access Your Location
  * [SETTING] to manage site exceptions: Options>Privacy & Security>Permissions>Location>Settings ***/
    // user_pref("permissions.default.geo", 2);
-/* 0203: use Mozilla geolocation service instead of Google when geolocation is enabled
+/* 0203: use Mozilla geolocation service instead of Google when geolocation is enabled [FF74+]
  * Optionally enable logging to the console (defaults to false) ***/
-user_pref("geo.wifi.uri", "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%");
+user_pref("geo.provider.network.url", "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%");
-   // user_pref("geo.wifi.logging.enabled", true); // [HIDDEN PREF]
+   // user_pref("geo.provider.network.logging.enabled", true); // [HIDDEN PREF]
 /* 0204: 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]
-/* 0205: disable GeoIP-based search results
- * [NOTE] May not be hidden if Firefox has changed your settings due to your locale
- * [1] https://trac.torproject.org/projects/tor/ticket/16254
- * [2] https://support.mozilla.org/en-US/kb/how-stop-firefox-making-automatic-connections#w_geolocation-for-default-search-engine ***/
-user_pref("browser.search.region", "US"); // [HIDDEN PREF]
-user_pref("browser.search.geoip.url", "");
 /* 0206: disable geographically specific results/search engines e.g. "browser.search.*.US"
  * i.e. ignore all of Mozilla's various search engines in multiple locales ***/
 user_pref("browser.search.geoSpecificDefaults", false);
@@ -396,7 +390,7 @@ user_pref("_user.js.parrot", "0700 syntax error: the parrot's given up the ghost
 /* 0701: disable IPv6
  * IPv6 can be abused, especially regarding MAC addresses. They also do not play nice
  * with VPNs. That's even assuming your ISP and/or router and/or website can handle it.
- * Firefox telemetry (April 2019) shows only 5% of all connections are IPv6.
+ * Firefox telemetry (April 2019) shows only 5% of all connections are IPv6
  * [NOTE] This is just an application level fallback. Disabling IPv6 is best done at an
  * OS/network level, and/or configured properly in VPN setups. If you are not masking your IP,
  * then this won't make much difference. If you are masking your IP, then it can only help.
@@ -596,6 +590,10 @@ user_pref("browser.cache.disk.enable", false);
  * [NOTE] This means any permission changes are session only
  * [1] https://bugzilla.mozilla.org/967812 ***/
    // user_pref("permissions.memory_only", true); // [HIDDEN PREF]
+/* 1007: 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", 16384);
 
 /** SESSIONS & SESSION RESTORE ***/
 /* 1020: exclude "Undo Closed Tabs" in Session Restore ***/
@@ -654,11 +652,13 @@ user_pref("security.ssl.require_safe_negotiation", true);
 /* 1202: control TLS versions with min and max
  * 1=TLS 1.0, 2=TLS 1.1, 3=TLS 1.2, 4=TLS 1.3
  * [WARNING] Leave these at default, otherwise you alter your TLS fingerprint.
- * Firefox telemetry (April 2019) shows only 0.5% of TLS web traffic uses 1.0 or 1.1
+ * Firefox telemetry (April 2020) shows only 0.25% of TLS web traffic uses 1.0 or 1.1
  * [1] https://www.ssllabs.com/ssl-pulse/ ***/
    // user_pref("security.tls.version.min", 3);
    // user_pref("security.tls.version.max", 4);
-/* 1203: disable SSL session tracking [FF36+]
+/* 1203: enforce TLS 1.0 and 1.1 downgrades as session only */
+user_pref("security.tls.version.enable-deprecated", false);
+/* 1204: disable SSL session tracking [FF36+]
  * SSL Session IDs are unique, last up to 24hrs in Firefox, and can be used for tracking
  * [SETUP-PERF] Relax this if you have FPI enabled (see 4000) *AND* you understand the
  * consequences. FPI isolates these, but it was designed with the Tor protocol in mind,
@@ -667,12 +667,12 @@ user_pref("security.ssl.require_safe_negotiation", true);
  * [2] https://bugzilla.mozilla.org/967977
  * [3] https://arxiv.org/abs/1810.07304 ***/
 user_pref("security.ssl.disable_session_identifiers", true); // [HIDDEN PREF]
-/* 1204: disable SSL Error Reporting
+/* 1205: disable SSL Error Reporting
  * [1] https://firefox-source-docs.mozilla.org/browser/base/sslerrorreport/preferences.html ***/
 user_pref("security.ssl.errorReporting.automatic", false);
 user_pref("security.ssl.errorReporting.enabled", false);
 user_pref("security.ssl.errorReporting.url", "");
-/* 1205: disable TLS1.3 0-RTT (round-trip time) [FF51+]
+/* 1206: disable TLS1.3 0-RTT (round-trip time) [FF51+]
  * [1] https://github.com/tlswg/tls13-spec/issues/1001
  * [2] https://blog.cloudflare.com/tls-1-3-overview-and-q-and-a/ ***/
 user_pref("security.tls.enable_0rtt_data", false);
@@ -867,10 +867,10 @@ user_pref("privacy.userContext.ui.enabled", true);
 /* 1702: enable Container Tabs [FF50+]
  * [SETTING] General>Tabs>Enable Container Tabs ***/
 user_pref("privacy.userContext.enabled", true);
-/* 1704: set behaviour on "+ Tab" button to display container menu [FF53+] [SETUP-CHROME]
+/* 1703: set behaviour on "+ Tab" button to display container menu on left click [FF74+]
- * 0=no menu (default), 1=show when clicked, 2=show on long press
+ * [NOTE] The menu is always shown on long press and right click
- * [1] https://bugzilla.mozilla.org/1328756 ***/
+ * [SETTING] General>Tabs>Enable Container Tabs>Settings>Select a container for each new tab ***/
-user_pref("privacy.userContext.longPressBehavior", 2);
+   // user_pref("privacy.userContext.newTabContainerOnLeftClick.enabled", true);
 
 /*** [SECTION 1800]: PLUGINS ***/
 user_pref("_user.js.parrot", "1800 syntax error: the parrot's pushing up daisies!");
@@ -918,7 +918,6 @@ user_pref("webgl.disabled", true);
 user_pref("webgl.enable-webgl2", false);
 /* 2012: limit WebGL ***/
 user_pref("webgl.min_capability_mode", true);
-user_pref("webgl.disable-extensions", true);
 user_pref("webgl.disable-fail-if-major-performance-caveat", true);
 /* 2022: disable screensharing ***/
 user_pref("media.getusermedia.screensharing.enabled", false);
@@ -1026,14 +1025,14 @@ user_pref("_user.js.parrot", "2400 syntax error: the parrot's kicked the bucket!
 /* 2401: disable website control over browser right-click context menu
  * [NOTE] Shift-Right-Click will always bring up the browser right-click context menu ***/
    // user_pref("dom.event.contextmenu.enabled", false);
-/* 2402: disable website access to clipboard events/content
+/* 2402: disable website access to clipboard events/content [SETUP-HARDEN]
- * [SETUP-WEB] This will break some sites functionality such as pasting into facebook, wordpress
+ * [NOTE] This will break some sites' functionality e.g. Outlook, Twitter, Facebook, Wordpress
  * This applies to onCut/onCopy/onPaste events - i.e. it requires interaction with the website
  * [WARNING] If both 'middlemouse.paste' and 'general.autoScroll' are true (at least one
  * is default false) then enabling this pref can leak clipboard content, see [2]
  * [1] https://www.ghacks.net/2014/01/08/block-websites-reading-modifying-clipboard-contents-firefox/
  * [2] https://bugzilla.mozilla.org/1528289 */
-user_pref("dom.event.clipboardevents.enabled", false);
+   // user_pref("dom.event.clipboardevents.enabled", false);
 /* 2404: disable clipboard commands (cut/copy) from "non-privileged" content [FF41+]
  * this disables document.execCommand("cut"/"copy") to protect your clipboard
  * [1] https://bugzilla.mozilla.org/1170911 ***/
@@ -1053,11 +1052,14 @@ user_pref("dom.vibrator.enabled", false);
  * [5] https://www.mozilla.org/security/advisories/mfsa2017-05/#CVE-2017-5400
  * [6] https://rh0dev.github.io/blog/2017/the-return-of-the-jit/ ***/
 user_pref("javascript.options.asmjs", false);
-/* 2421: disable Ion and baseline JIT to help harden JS against exploits
+/* 2421: disable Ion and baseline JIT to harden against JS exploits [SETUP-HARDEN]
- * [WARNING] If false, causes the odd site issue and there is also a performance loss
+ * [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
  * [1] https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0817 ***/
    // user_pref("javascript.options.ion", false);
    // user_pref("javascript.options.baselinejit", false);
+   // user_pref("javascript.options.jit_trustedprincipals", true); // [FF75+] [HIDDEN PREF]
 /* 2422: disable WebAssembly [FF52+] [SETUP-PERF]
  * [NOTE] In FF71+ this no longer affects extensions (1576254)
  * [1] https://developer.mozilla.org/docs/WebAssembly ***/
@@ -1187,6 +1189,15 @@ user_pref("pdfjs.disabled", false); // [DEFAULT: false]
 /* 2621: disable links launching Windows Store on Windows 8/8.1/10 [WINDOWS]
  * [1] https://www.ghacks.net/2016/03/25/block-firefox-chrome-windows-store/ ***/
 user_pref("network.protocol-handler.external.ms-windows-store", false);
+/* 2622: enforce no system colors; they can be fingerprinted
+ * [SETTING] General>Language and Appearance>Fonts and Colors>Colors>Use system colors ***/
+user_pref("browser.display.use_system_colors", false); // [DEFAULT: false]
+/* 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 */
+user_pref("permissions.delegation.enabled", false);
 
 /** DOWNLOADS ***/
 /* 2650: discourage downloading to desktop
@@ -1216,7 +1227,7 @@ user_pref("browser.download.hide_plugins_without_extensions", false);
  * [1] archived: https://archive.is/DYjAM ***/
 user_pref("extensions.enabledScopes", 5); // [HIDDEN PREF]
 user_pref("extensions.autoDisableScopes", 15); // [DEFAULT: 15]
-/* 2662: disable webextension restrictions on certain mozilla domains (also see 4503) [FF60+]
+/* 2662: disable webextension restrictions on certain mozilla domains (you also need 4503) [FF60+]
  * [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1384330,1406795,1415644,1453988 ***/
    // user_pref("extensions.webextensions.restrictedDomains", "");
 
@@ -1690,6 +1701,21 @@ user_pref("toolkit.telemetry.hybridContent.enabled", false); // [FF59+]
    // [-] https://bugzilla.mozilla.org/1488583
 user_pref("dom.indexedDB.enabled", true); // [DEFAULT: true]
 // * * * /
+// FF74
+// 0203: use Mozilla geolocation service instead of Google when geolocation is enabled
+   // Optionally enable logging to the console (defaults to false)
+   // [-] https://bugzilla.mozilla.org/1613627
+user_pref("geo.wifi.uri", "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%");
+   // user_pref("geo.wifi.logging.enabled", true); // [HIDDEN PREF]
+// 1704: set behaviour on "+ Tab" button to display container menu [FF53+] [SETUP-CHROME]
+   // 0=no menu (default), 1=show when clicked, 2=show on long press
+   // [1] https://bugzilla.mozilla.org/1328756
+   // [-] https://bugzilla.mozilla.org/1606265
+user_pref("privacy.userContext.longPressBehavior", 2);
+// 2012: limit WebGL
+   // [-] https://bugzilla.mozilla.org/1477756
+user_pref("webgl.disable-extensions", true);
+// * * * /
 // ***/
 
 /* END: internal custom pref to test for syntax errors ***/