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Privacy-Focused Proton Mail Aids FBI in Uncovering ‘Stop Cop City’ Protester’s True Identity
(www.gadgetreview.com)
This is a most excellent place for technology news and articles.
Well, the entire procedure requires you to first trust the snail mail chain in the first place, so it's a different category of trust that "trust a CC provider". Snail mail used to be sacred, but it's been known not-to for a long while now. And at the point that you can expect the acabs are willing to inkdust and laser your mail for biological traces, that means you are facing a nation-state adversary with nation-state power, so you should be looking into nation-state level defenses instead.