Securing Firefox https://www.privateinternetaccess.com/blog/2018/09/firefox-hardening-guide/
Disable WebRTC media.peerconnection.enabled = false
Disable Fingerprinting privacy.resistFingerprinting = false
Disable the 3DES cipher security.ssl3.rsa_des_ede3_sha = false
Require Safe Negotiation security.ssl.require_safe_negotiation = true
Disable TLS versions 1.0 and 1.1 security.tls.version.min = 3
Disable 0-RTT security.tls.enable_0rtt_data = false
Disable Automatic Formfill browser.formfill.enable = false
Disable Plugin Scanning plugin.scan.plid.all = false
Disable Telemetry All to false
browser.newtabpage.activity-stream.feeds.telemetry browser.newtabpage.activity-stream.telemetry browser.pingcentre.telemetry devtools.onboarding.telemetry-logged media.wmf.deblacklisting-for-telemetry-in-gpu-process toolkit.telemetry.archive.enabled toolkit.telemetry.bhrping.enabled toolkit.telemetry.firstshutdownping.enabled toolkit.telemetry.hybridcontent.enabled toolkit.telemetry.newprofileping.enabled toolkit.telemetry.unified toolkit.telemetry.updateping.enabled toolkit.telemetry.shutdownpingsender.enabled toolkit.telemetry.shutdownPingSender.enabledFirstSession
Disable Prefetching network.dns.disableprefetch = true
Disable Referral Headers network.http.sendRefererHeader = 0
Disable WebGL webgl.disabled = true
Disable Battery API dom.battery.enabled = false
SuperCooKey https://www.privateinternetaccess.com/blog/2018/11/supercookey-a-supercookie-built-into-tls-1-2-and-1-3/
security.ssl.disable_session_identifiers (hidden feature) = true security.ssl.enable_false_start = false security.tls.enable_0rtt_data = false privacy.firstparty.isolate = true