Couple months ago, FIrefox pulled some stupid stuff with an update they pushed which was a toxic certificate that invalidated ALL of everyone's extensions, disabling them.  The ramifications is that they basically exposed everyone using firefox, opening them up to the world.    It was effectively a doxx masquerading as a glitch.    They took days to fix it, and apologized but it was the single most destructive thing they've (mozilla) ever done.    I personally dug through flags and  1006   the about:config settings and found many troubling things which indicated that Firefox was sending user data back to their servers and even google servers (yep), which acted effectively as backdoors.  This was spellcheck/grammar check/metrics and telemetry/and even that of the extensions, and which extensions you ahve installed.  All sorts of metadata and it contained an ID that uniquely identified the browser.  I realized that this was THE one thing that mozilla ff was doing that was letting websites "fingerprint" the browser despite all the anti fingerprinting extensions were installed properly and working.  This pissed me off beyond imagining, because it says that mozilla FF is totally compromised by the deepstate and it was largely indefeatable for most users the way to fix is to track down all the config urls and change them to 127.0.0.1 (the piehole technique) and cause the callbacks to fail; this of course breaks some things ALSO I found that if you go to websites taht are based on twitter bootstrap or any google thing, they contain web icons, a type of font that's loaded; these fonts reside on googles servers.  So what this means is that just by loading a web page, google knows which website you've gone to based on the referer; and they also know many other things like your connection speed and ISP and IP and many other things There is quite literally no way to escape the surveillance capitalism and tracking There are no compromised browsers that I know of; nor is privacy real.  It's an illusion, a fiction..  I think in many ways it's a waste of time and instead we should be in the business of "tracking the trackers" and pursuing revange legalism and lawfare to fight them instead of desperately fighting a losing war of attrition agasinst big tech which has armies of amoral and corrupted corporate nerds trying to deprive you of your privacies