diff --git a/user.js b/user.js index 10a035c..944643f 100644 --- a/user.js +++ b/user.js @@ -1,7 +1,7 @@ /****** * name: thunderbird user.js -* date: 8 November 2025 -* version: v140.2 +* date: 1 August 2026 +* version: v153.0 * url: https://github.com/HorlogeSkynet/thunderbird-user.js * license: MIT (https://github.com/HorlogeSkynet/thunderbird-user.js/blob/master/LICENSE) @@ -48,7 +48,7 @@ 0600: BLOCK IMPLICIT OUTBOUND 0700: DNS / DoH / PROXY / SOCKS 0800: LOCATION BAR / SEARCH BAR / SUGGESTIONS / HISTORY / FORMS - 0900: PASSWORDS + 0900: PASSWORDS / PASSKEYS 1000: DISK AVOIDANCE 1200: HTTPS (SSL/TLS / OCSP / CERTS / HPKP) 1600: REFERERS @@ -185,12 +185,16 @@ user_pref("app.donation.eoy.version.viewed", 999); SB has taken many steps to preserve privacy. If required, a full url is never sent to Google, only a part-hash of the prefix, hidden with noise of other real part-hashes. Thunderbird takes measures such as stripping out identifying parameters and since SBv4 (FF57+) - doesn't even use cookies. (#Turn on browser.safebrowsing.debug to monitor this activity) + doesn't even use cookies. (#Turn on browser.safebrowsing.debug to monitor this activity). + + FF147+ uses SBv5 which incorporates Oblivous HTTP [5] and SBv5's local list mode [6] [1] https://feeding.cloud.geek.nz/posts/how-safe-browsing-works-in-firefox/ [2] https://wiki.mozilla.org/Security/Safe_Browsing [3] https://support.mozilla.org/kb/how-does-phishing-and-malware-protection-work [4] https://educatedguesswork.org/posts/safe-browsing-privacy/ + [5] https://developers.google.com/safe-browsing/reference + [6] https://developers.google.com/safe-browsing/reference/Local.List.Mode ***/ user_pref("_user.js.parrot", "0400 syntax error: the parrot's passed on!"); /* 0401: disable SB (Safe Browsing) @@ -225,9 +229,6 @@ user_pref("network.prefetch-next", false); * [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); -/* 0603: disable predictor / prefetching ***/ -user_pref("network.predictor.enabled", false); -user_pref("network.predictor.enable-prefetch", false); // [FF48+] [DEFAULT: false] /* 0604: disable link-mouseover opening connection to linked server * [1] https://news.slashdot.org/story/15/08/14/2321202/how-to-quash-firefoxs-silent-requests ***/ user_pref("network.http.speculative-parallel-limit", 0); @@ -304,11 +305,13 @@ user_pref("browser.urlbar.trending.featureGate", false); /* 0806: disable urlbar suggestions ***/ user_pref("browser.urlbar.addons.featureGate", false); // [FF115+] user_pref("browser.urlbar.amp.featureGate", false); // [FF141+] adMarketplace -user_pref("browser.urlbar.fakespot.featureGate", false); // [FF130+] [DEFAULT: false] +user_pref("browser.urlbar.importantDates.featureGate", false); // [FF143+] +user_pref("browser.urlbar.market.featureGate", false); // [FF143+] stock market user_pref("browser.urlbar.mdn.featureGate", false); // [FF117+] user_pref("browser.urlbar.weather.featureGate", false); // [FF108+] user_pref("browser.urlbar.wikipedia.featureGate", false); // [FF141+] user_pref("browser.urlbar.yelp.featureGate", false); // [FF124+] +user_pref("browser.urlbar.yelpRealtime.featureGate", false); // [FF144+] /* 0807: disable urlbar clipboard suggestions [FF118+] ***/ user_pref("browser.urlbar.clipboard.featureGate", false); /* 0808: disable recent searches [FF120+] @@ -338,7 +341,7 @@ user_pref("layout.css.visited_links_enabled", false); user_pref("browser.search.separatePrivateDefault", true); // [FF70+] user_pref("browser.search.separatePrivateDefault.ui.enabled", true); // [FF71+] -/*** [SECTION 0900]: PASSWORDS +/*** [SECTION 0900]: PASSWORDS / PASSKEYS [1] https://support.mozilla.org/kb/use-primary-password-protect-stored-logins-and-pas ***/ user_pref("_user.js.parrot", "0900 syntax error: the parrot's expired!"); @@ -371,6 +374,9 @@ user_pref("network.auth.subresource-http-auth-allow", 1); /* 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", true); +/* 0910: enforce no direct attestation in passkeys [FF144+] + // [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1981587 ***/ +user_pref("security.webauthn.always_allow_direct_attestation", false); // [DEFAULT: false] /*** [SECTION 1000]: DISK AVOIDANCE ***/ user_pref("_user.js.parrot", "1000 syntax error: the parrot's gone to meet 'is maker!"); @@ -412,7 +418,7 @@ 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 (June 2025) reports almost 99.85% 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 @@ -426,29 +432,6 @@ user_pref("security.ssl.require_safe_negotiation", true); * [3] https://blog.cloudflare.com/tls-1-3-overview-and-q-and-a/ ***/ user_pref("security.tls.enable_0rtt_data", false); -/** OCSP (Online Certificate Status Protocol) - [1] https://scotthelme.co.uk/revocation-is-broken/ - [2] https://blog.mozilla.org/security/2013/07/29/ocsp-stapling-in-firefox/ -***/ -/* 1211: enforce OCSP fetching to confirm current validity of certificates - * 0=disabled, 1=enabled (default), 2=enabled for EV certificates only - * OCSP (non-stapled) leaks information about the sites you visit to the CA (cert authority) - * It's a trade-off between security (checking) and privacy (leaking info to the CA) - * [NOTE] This pref only controls OCSP fetching and does not affect OCSP stapling - * [SETTING] Privacy & Security > Security > Certificates > Query OCSP responder servers to confirm - * [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 - * When a CA cannot be reached to validate a cert, Thunderbird's just continues the connection (=soft-fail) - * Setting this pref to true tells Thunderbird's 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 - * [3] https://letsencrypt.org/2024/12/05/ending-ocsp/ ***/ -user_pref("security.OCSP.require", true); - /** CERTS / HPKP (HTTP Public Key Pinning) ***/ /* 1223: enable strict PKP (Public Key Pinning) * 0=disabled, 1=allow user MiTM (default; such as your antivirus), 2=strict @@ -458,12 +441,13 @@ user_pref("security.cert_pinning.enforcement_level", 2); /* 1224: enable CRLite [FF73+] * 0 = disabled * 1 = consult CRLite but only collect telemetry - * 2 = consult CRLite and enforce both "Revoked" and "Not Revoked" results - * 3 = consult CRLite and enforce "Not Revoked" results, but defer to OCSP for "Revoked" (default) + * 2 = consult CRLite and enforce both "Revoked" and "Not Revoked" results (default) + * 3 = consult CRLite and enforce "Not Revoked" results, but defer to OCSP for "Revoked" (removed FF145) * [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.pki.crlite_mode", 2); + * [2] https://blog.mozilla.org/security/tag/crlite/ + * [3] https://hacks.mozilla.org/2025/08/crlite-fast-private-and-comprehensive-certificate-revocation-checking-in-firefox/ ***/ +user_pref("security.remote_settings.crlite_filters.enabled", true); // [DEFAULT: true] +user_pref("security.pki.crlite_mode", 2); // [DEFAULT: 2 FF142+] /* 1225: enable loading of client certificates stored in OS certificate storage * Bug: this does **NOT** work for S/MIME [1] * [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1726442 ***/ @@ -516,10 +500,6 @@ user_pref("network.http.referer.XOriginTrimmingPolicy", 2); /*** [SECTION 1700]: CONTAINERS ***/ user_pref("_user.js.parrot", "1700 syntax error: the parrot's bit the dust!"); -/* 1701: enable Container Tabs and its UI setting [FF50+] - * https://wiki.mozilla.org/Security/Contextual_Identity_Project/Containers ***/ -user_pref("privacy.userContext.enabled", true); -user_pref("privacy.userContext.ui.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=Thunderbird will not choose a container (so your extension can) @@ -574,7 +554,8 @@ user_pref("network.IDN_show_punycode", true); /* 2620: enforce PDFJS, disable PDFJS scripting * This setting controls if the option "Display in Thunderbird" is available in the setting below * and by effect controls whether PDFs are handled in-browser or externally ("Ask" or "Open With") - * [WHY] pdfjs is lightweight, open source, and secure: the last exploit was June 2015 [1] + * [WHY] pdfjs is lightweight, open source, and secure: In the last 10 years it has only had + * two known exploits, both in 2024: one 'Severe' and one 'Important' [1] * It doesn't break "state separation" of browser content (by not sharing with OS, independent apps). * It maintains disk avoidance and application data isolation. It's convenient. You can still save to disk. * [NOTE] JS can still force a pdf to open in-browser by bundling its own code @@ -620,13 +601,19 @@ user_pref("extensions.enabledScopes", 5); // [HIDDEN PREF] /*** [SECTION 2700]: ETP (ENHANCED TRACKING PROTECTION) ***/ user_pref("_user.js.parrot", "2700 syntax error: the parrot's joined the bleedin' choir invisible!"); -/* 2702: disable ETP web compat features [FF93+] +/* 2702: disable ETP web compat features (about:compat) [FF93+] * [SETUP-HARDEN] Includes skip lists, heuristics (SmartBlock) and automatic grants * 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 ***/ // user_pref("privacy.antitracking.enableWebcompat", false); +/* 2705: set ETP Strict/Custom exception lists (FF141+) + [SETTING] Options>Privacy & Security>Enhanced Tracking Protection>Strict/Custom>Fix major [baseline] | minor [convenience] + [1] https://support.mozilla.org/en-US/kb/manage-enhanced-tracking-protection-exceptions + [2] https://etp-exceptions.mozilla.org/ ***/ +user_pref("privacy.trackingprotection.allow_list.baseline.enabled", true); // [DEFAULT: true] +user_pref("privacy.trackingprotection.allow_list.convenience.enabled", true); // [DEFAULT: true] /*** [SECTION 2800]: SHUTDOWN & SANITIZING We enable sanitizeOnShutdown to help prevent 1st party website tracking across sessions. @@ -663,7 +650,7 @@ user_pref("privacy.clearOnShutdown_v2.cookiesAndStorage", true); /** SANITIZE SITE DATA: IGNORES "ALLOW" SITE EXCEPTIONS ***/ /* 2820: set manual "Clear Data" items [SETUP-CHROME] [FF128+] * Thunderbird remembers your last choices. This will reset them when you start Thunderbird ***/ -user_pref("privacy.clearSiteData.cache", true); +user_pref("privacy.clearSiteData.cache", true); // [DEFAULT: true] user_pref("privacy.clearSiteData.cookiesAndStorage", false); // keep false until it respects "allow" site exceptions user_pref("privacy.clearSiteData.historyFormDataAndDownloads", false); // user_pref("privacy.clearSiteData.siteSettings", false); @@ -697,6 +684,7 @@ user_pref("privacy.sanitize.timeSpan", 0); on a per site basis for compatibility (4004). https://searchfox.org/mozilla-central/source/toolkit/components/resistfingerprinting/RFPTargetsDefault.inc + https://support.mozilla.org/en-US/kb/firefox-protection-against-fingerprinting#w_how-does-each-protection-work [NOTE] RFPTargets + granular overrides are somewhat experimental and may produce unexpected results - e.g. FrameRate can only be controlled per process, not per origin @@ -765,10 +753,6 @@ user_pref("_user.js.parrot", "4000 syntax error: the parrot's bereft of life!"); Modifier events suppressed are SHIFT and both ALT keys. Chrome is not affected. 1459089 - disable OS locale in HTTP Accept-Language headers (ANDROID) (FF62) 1479239 - return "no-preference" with prefers-reduced-motion (FF63) - 1363508 & 1826051 & 1957658 - spoof/suppress Pointer Events, spoof maxTouchPoints (FF64, FF132, FF143, ESR140.2) - FF64: maxTouchPoints: 0 = desktop - FF132: maxTouchPoints: 0 = mac | 10 = windows, linux, mobile - FF143/140.2: maxTouchPoints: 0 = mac, linux | 10 = windows | 5 = mobile 1492766 - spoof pointerEvent.pointerid (FF65) 1485266 - disable exposure of system colors to CSS or canvas (FF67) 1494034 - return "light" with prefers-color-scheme (FF67) @@ -786,6 +770,11 @@ user_pref("_user.js.parrot", "4000 syntax error: the parrot's bereft of life!"); 1787790 - normalize system fonts (FF128) 1835987 - spoof timezone as Atlantic/Reykjavik (previously FF55+ was UTC) (FF128) 1656377 - spoof pointerEvents azimuthAngle and altitudeAngle (FF131) + 1826051 & 1957658 & 2021715 - spoof/suppress Pointer Events, spoof maxTouchPoints (FF132, FF143/ESR140.2, FF150) + previously FF64+ (1363508) it always returned maxTouchPoints as 0 + FF132: 0 = mac | 10 = windows, linux, mobile + FF143: 0 = mac, linux | 10 = windows | 5 = mobile | no longer spoof touch PointerEvents | backported to ESR140.2 + FF150: 5 = linux 1834307 - always use smooth scrolling (FF132) 1918202 - spoof screen orientation based on spoofed screen size and platform (FF132) previously FF50+ it always returned landscape-primary and an angle of 0 @@ -800,8 +789,11 @@ user_pref("_user.js.parrot", "4000 syntax error: the parrot's bereft of life!"); 1972600 - spoof network connection for HTMLMediaElement preload (FF142, ESR140.1) 1975851 - return true for navigator.onLine (FF142, ESR140.1) 1973265 - disable WebCodecs API (FF142) - 1984333 - spoof navigator.hardwareConcurrency as 4 except mac return 8 (FF143+) + 1984333 - spoof navigator.hardwareConcurrency as 4 except mac return 8 (FF143) previously FF55+ it returned 2 + 1999126 - enforce navigator.pdfViewerEnabled as true and plugins/mimeTypes as hard-coded values (FF147) + 2047612 - enforce IME styling in EditContext API (FF154) + 2045882 - enforce sRGB in canvas (FF154?) ***/ user_pref("_user.js.parrot", "4500 syntax error: the parrot's popped 'is clogs"); /* 4501: enable RFP @@ -942,7 +934,7 @@ user_pref("extensions.formautofill.creditCards.enabled", false); // [FF56+] user_pref("dom.popup_allowed_events", "click dblclick mousedown pointerdown"); /* 5019: disable page thumbnail collection ***/ user_pref("browser.pagethumbnails.capturing_disabled", true); // [HIDDEN PREF] -/* 5020: disable Windows native notifications and use app notications instead [FF111+] [WINDOWS] ***/ +/* 5020: disable Windows native notifications and use app notifications instead [FF111+] [WINDOWS] ***/ // user_pref("alerts.useSystemBackend.windows.notificationserver.enabled", false); /* 5901: Enforce Private Browsing for OAuth sign-in * Providers may expect a device identifier from the browser, which could cause issues with PB. As @@ -952,7 +944,7 @@ user_pref("browser.pagethumbnails.capturing_disabled", true); // [HIDDEN PREF] /*** [SECTION 5500]: OPTIONAL HARDENING Thunderbird-User.JS maintainer here : - Whereas not recommended by upstream arkenfox, we disable each one of those Web + Whereas not recommended by upstream Arkenfox, we disable each one of those Web features as we focus on keeping Thunderbird an email client and not a browser. ***/ user_pref("_user.js.parrot", "5500 syntax error: this is an ex-parrot!"); @@ -970,7 +962,7 @@ user_pref("gfx.font_rendering.graphite.enabled", false); * [1] http://asmjs.org/ * [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); +user_pref("javascript.options.asmjs", false); // [DEFAULT: false FF148+] /* 5505: disable Ion and baseline JIT to harden against JS exploits [RESTART] * [NOTE] When both Ion and JIT are disabled, and trustedprincipals * is enabled, then Ion can still be used by extensions (1599226) @@ -1047,22 +1039,14 @@ 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+ ***/ - // user_pref("privacy.clearOnShutdown.cache", ""); - // user_pref("privacy.clearOnShutdown.cookies", ""); - // user_pref("privacy.clearOnShutdown.downloads", ""); - // user_pref("privacy.clearOnShutdown.formdata", ""); - // user_pref("privacy.clearOnShutdown.history", ""); - // user_pref("privacy.clearOnShutdown.offlineApps", ""); - // 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", ""); -/* 6051: prefsCleaner: reset previously active items removed from arkenfox FF140+ ***/ +/* 6050: prefsCleaner: reset previously active items removed from arkenfox FF140+ ***/ // user_pref("browser.display.use_system_colors", ""); + // user_pref("browser.urlbar.fakespot.featureGate", ""); + // user_pref("security.OCSP.enabled", ""); + // user_pref("security.OCSP.require", ""); +/* 6051: prefsCleaner: reset previously active items removed from arkenfox FF153+ ***/ + // user_pref("privacy.userContext.enabled", ""); + // user_pref("privacy.userContext.ui.enabled", ""); /*** [SECTION 7000]: DON'T BOTHER Thunderbird-User.JS maintainer here : @@ -1079,8 +1063,8 @@ user_pref("full-screen-api.enabled", false); /* 7003: disable non-modern cipher suites [1] * [WHY] Passive fingerprinting. Minimal/non-existent threat of downgrade attacks * [1] https://browserleaks.com/ssl ***/ - // user_pref("security.ssl3.ecdhe_ecdsa_aes_256_sha", false); - // user_pref("security.ssl3.ecdhe_ecdsa_aes_128_sha", false); + // user_pref("security.ssl3.ecdhe_ecdsa_aes_128_sha", false); // [DEFAULT: false FF150+] + // user_pref("security.ssl3.ecdhe_ecdsa_aes_256_sha", false); // [DEFAULT: false FF154+] // user_pref("security.ssl3.ecdhe_rsa_aes_128_sha", false); // user_pref("security.ssl3.ecdhe_rsa_aes_256_sha", false); // user_pref("security.ssl3.rsa_aes_128_gcm_sha256", false); // no PFS @@ -1125,18 +1109,18 @@ user_pref("dom.event.clipboardevents.enabled", false); // user_pref("extensions.systemAddon.update.enabled", false); // [FF62+] // user_pref("extensions.systemAddon.update.url", ""); // [FF44+] /* 7015: enable the DNT (Do Not Track) HTTP header - * [WHY] DNT is enforced with Tracking Protection which is used in ETP Strict (2701) ***/ + * [WHY] Fingerprintable. In FF141+ DNT is never enabled. DNT is slated for deprecation [1] + [NOTE] In FF140, DNT is enforced with Tracking Protection which is used in ETP Strict (2701) + [1] https://bugzilla.mozilla.org/1967420 ***/ // user_pref("privacy.donottrackheader.enabled", true); /* 7016: customize ETP settings * [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("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.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); @@ -1165,10 +1149,16 @@ user_pref("media.peerconnection.enabled", false); * [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); +/* 7022: bFPP (baselineFingerprintingProtection) [FF139+] + * [WHY] Arkenfox only supports ETP Strict (2701) which enables FPP browser-wide (normal and private + * browsing window contexts). If FPP is enabled in the same context as bFPP, FPP takes precedence. + // user_pref("privacy.baselineFingerprintingProtection", true); + // user_pref("privacy.baselineFingerprintingProtection.granularOverrides", ""); + // user_pref("privacy.baselineFingerprintingProtection.overrides", ""); /*** [SECTION 8000]: DON'T BOTHER: FINGERPRINTING - [WHY] They are insufficient to help anti-fingerprinting and do more harm than good - [WARNING] DO NOT USE with RFP. RFP already covers these and they can interfere + [WHY] They are insufficient for fingerprinting protection and do more harm than good + [WARNING] DO NOT USE: they can interfere with built-in solutions such as RFP and FPP [NOTE] An empty User-Agent may break Microsoft Exchange OAuth2 login ***/ user_pref("_user.js.parrot", "8000 syntax error: the parrot's crossed the Jordan"); @@ -1196,8 +1186,11 @@ user_pref("_user.js.parrot", "8000 syntax error: the parrot's crossed the Jordan // user_pref("webgl.enable-debug-renderer-info", ""); /*** [SECTION 8500]: TELEMETRY - Upstream arkenfox does not consider Thunderbird 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. + Upstream Arkenfox does not consider Thunderbird 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. + + READ: https://ritter.vg/blog-telemetry.html + Opt-out - Telemetry is essential: an e-mail client is a (_very_) large complex beast costing millions to maintain - Opt-in telemetry _does not_ work and results in data that is unrepresentative and may be misleading @@ -1223,7 +1216,7 @@ user_pref("datareporting.policy.dataSubmissionEnabled", false); /* 8501: disable Health Reports * [SETTING] Privacy & Security > Thunderbird Data Collection and Use > Send technical... data ***/ user_pref("datareporting.healthreport.uploadEnabled", false); -/* 0802: disable telemetry +/* 8502: 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 @@ -1566,8 +1559,13 @@ user_pref("mail.openpgp.load_untested_gpgme_version", "45"); // [TB148+] [TB140 /*** [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 +/* ESR140.x still uses all the following prefs // [NOTE] replace the * with a slash in the line above to re-enable active ones +// FF148 +// 0603: disable predictor / prefetching + // [-] https://bugzilla.mozilla.org/2006028 +user_pref("network.predictor.enabled", false); // [DEFAULT: false FF144+] +user_pref("network.predictor.enable-prefetch", false); // [FF48+] [DEFAULT: false] // ***/ /* END: internal custom pref to test for syntax errors ***/