hardened firefox custom user.js

/**************************************************************************************
 * Minimal Hardened Firefox user.js
 * Philosophy: Fast • Minimal • Privacy • High Compatibility
 *************************************************************************************/

/*** Disable Mozilla Telemetry ******************************************************/

user_pref("toolkit.telemetry.enabled", false);
user_pref("toolkit.telemetry.unified", false);
user_pref("toolkit.telemetry.archive.enabled", false);

user_pref("browser.newtabpage.activity-stream.feeds.telemetry", false);
user_pref("browser.newtabpage.activity-stream.telemetry", false);
user_pref("browser.ping-centre.telemetry", false);

/*** Disable Mozilla Experiments *****************************************************/

user_pref("app.normandy.enabled", false);
user_pref("app.shield.optoutstudies.enabled", false);

/*** Disable JavaScript inside PDFs **************************************************/

user_pref("pdfjs.enableScripting", false);

/*** Disable Search Suggestions ******************************************************/

user_pref("browser.search.suggest.enabled", false);

/*** Block Location Requests **********************************************************/

user_pref("permissions.default.geo", 2);

/*** Block Website Notifications *****************************************************/

user_pref("permissions.default.desktop-notification", 2);

/*** Fingerprinting ******************************************************************/

user_pref("privacy.fingerprintingProtection", true);
user_pref("privacy.baselineFingerprintingProtection", true);
user_pref("privacy.resistFingerprinting", false);
user_pref("privacy.resistFingerprinting.letterboxing", false);

/*** Disable WebRTC ******************************************************************/

user_pref("media.peerconnection.enabled", false);

/*** HTTPS Only **********************************************************************/

user_pref("dom.security.https_only_mode", true);

/*** Global Privacy Control **********************************************************/
user_pref("privacy.globalprivacycontrol.enabled", true);

/*** Disable DNS Prefetch ************************************************************/
user_pref("network.dns.disablePrefetch", true);
user_pref("network.dns.disablePrefetchFromHTTPS", true);

/*** Disable Speculative Connections *************************************************/
user_pref("network.http.speculative-parallel-limit", 0);
user_pref("browser.urlbar.speculativeConnect.enabled", false);
user_pref("browser.places.speculativeConnect.enabled", false);
user_pref("network.prefetch-next", false);

/*** Helps Prevent IDN Homograph (Punycode) Phishing *********************************/
user_pref("network.IDN_show_punycode", true);

/*** Disable Form History ************************************************************/
user_pref("browser.formfill.enable", false);

/*** Disable CSP Reporting ***********************************************************/
user_pref("security.csp.reporting.enabled", false);

/*** Disable Firefox AI ************************************************************/
user_pref("browser.ml.enable", false);
user_pref("browser.ml.chat.enabled", false);

/*** Disable Firefox Recommendations *************************************************/
user_pref("browser.discovery.enabled", false);

/*** Disable Quick Suggest ***********************************************************/
user_pref("browser.urlbar.quicksuggest.enabled", false);

/*** Remove Sponsored Content ********************************************************/
user_pref("browser.newtabpage.activity-stream.showSponsored", false);
user_pref("browser.newtabpage.activity-stream.showSponsoredTopSites", false);