For 1, I use Temporary Containers[0] and have it set to auto-start and delete the containers as soon as the last related window closes. It's a PIA for logging

For 1, I use Temporary Containers[0] and have it set to auto-start and delete the containers as soon as the last related window closes. It's a PIA for logging into things (e.g.: companies who use three different redirects to three different sub-domains) but that complaint is my fault, based on how I've configured it. That plus deleting history on close of Firefox isn't enough to thwart the most egregious adversary (e.g.: those with three-lettered names) but should be enough for privacy concerns. For 2, I might also recommend Canvas Fingerprint Detector[1]. Instead of not replying (which could be, in and of itself, a fingerprint[2]), it generates a random fingerprint signature in response; though, in principle, this might be a tracking vector, as well. [0] - https://addons.mozilla.org/sv-SE/firefox/addon/temporary-containers/ https://addons.mozilla.org/sv-SE/firefox/addon/temporary-con... [1] - https://addons.mozilla.org/sv-SE/firefox/addon/canvas-fingerprint-defender/ https://addons.mozilla.org/sv-SE/firefox/addon/canvas-finger... [2] - https://multilogin.com/how-canvas-fingerprint-blockers-make-you-easily-trackable/ https://multilogin.com/how-canvas-fingerprint-blockers-make-...