v140.1 (#2013)

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   There is an archived version at https://github.com/arkenfox/user.js/issues/123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: 1-November-2025
+  Last updated: 14-August-2025
 
   Instructions:
   - [optional] close Firefox and backup your profile
@@ -76,10 +76,6 @@
     'security.ssl3.rsa_des_ede3_sha', // 93
 
     /* REMOVED */
-    /* 141-153 */
-    'browser.display.use_system_colors',
-    'security.OCSP.enabled',
-    'security.OCSP.require',
     /* 129-140 */
     'dom.securecontext.allowlist_onions',
     'network.http.referer.hideOnionSource',

user.js

@@ -1,7 +1,7 @@
 /******
 *    name: arkenfox user.js
-*    date: 5 November 2025
-* version: 144
+*    date: 4 November 2025
+* version: 140
 *    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
@@ -205,7 +205,7 @@ user_pref("network.prefetch-next", false);
 user_pref("network.dns.disablePrefetch", true);
 user_pref("network.dns.disablePrefetchFromHTTPS", true);
 /* 0603: disable predictor / prefetching ***/
-user_pref("network.predictor.enabled", false); // [DEFAULT: false FF144+]
+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 ***/
@@ -402,6 +402,29 @@ 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...
+ * [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, 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
+ * [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
@@ -410,13 +433,12 @@ 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 (default)
- * 3 = consult CRLite and enforce "Not Revoked" results, but defer to OCSP for "Revoked" (removed FF145)
+ * 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)
  * [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1429800,1670985,1753071
- * [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/ ***/
+ * [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); // [DEFAULT: 2 FF142+]
+user_pref("security.pki.crlite_mode", 2);
 
 /** MIXED CONTENT ***/
 /* 1241: disable insecure passive content (such as images) on https pages ***/
@@ -550,7 +572,7 @@ user_pref("browser.tabs.searchclipboardfor.middleclick", false); // [DEFAULT: fa
 user_pref("browser.contentanalysis.enabled", false); // [FF121+] [DEFAULT: false]
 user_pref("browser.contentanalysis.default_result", 0); // [FF127+] [DEFAULT: 0]
 /* 2635: disable referrer and storage access for resources injected by content scripts [FF139+] ***/
-user_pref("privacy.antitracking.isolateContentScriptResources", true);
+   // user_pref("privacy.antitracking.isolateContentScriptResources", true);
 /* 2640: disable CSP Level 2 Reporting [FF140+] ***/
 user_pref("security.csp.reporting.enabled", false);
 
@@ -640,7 +662,7 @@ user_pref("privacy.clearOnShutdown_v2.cookiesAndStorage", true);
 /* 2820: set manual "Clear Data" items [SETUP-CHROME] [FF128+]
  * Firefox remembers your last choices. This will reset them when you start Firefox
  * [SETTING] Privacy & Security>Browser Privacy>Cookies and Site Data>Clear Data ***/
-user_pref("privacy.clearSiteData.cache", true); // [DEFAULT: true]
+user_pref("privacy.clearSiteData.cache", true);
 user_pref("privacy.clearSiteData.cookiesAndStorage", false); // keep false until it respects "allow" site exceptions
 user_pref("privacy.clearSiteData.historyFormDataAndDownloads", false);
    // user_pref("privacy.clearSiteData.siteSettings", false);
@@ -779,7 +801,7 @@ 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 (FF144+)
+   1984333 - spoof navigator.hardwareConcurrency as 4 except mac return 8 (FF143+)
        previously FF55+ it returned 2
 ***/
 user_pref("_user.js.parrot", "4500 syntax error: the parrot's popped 'is clogs");
@@ -1041,8 +1063,6 @@ user_pref("extensions.quarantinedDomains.enabled", true); // [DEFAULT: true]
    // user_pref("privacy.cpd.sessions", "");
 /* 6051: prefsCleaner: reset previously active items removed from arkenfox FF140+ ***/
    // user_pref("browser.display.use_system_colors", "");
-   // user_pref("security.OCSP.enabled", "");
-   // user_pref("security.OCSP.require", "");
 
 /*** [SECTION 7000]: DON'T BOTHER ***/
 user_pref("_user.js.parrot", "7000 syntax error: the parrot's pushing up daisies!");