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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.
Again, they did not "aid" nor "give" that information. They were legally obliged to do so. There was never a choice. This could've happened with literally any company, E2EE stops them from being forced to turn over the emails themselves, but basic account metadata (creation date, payment methods, contact details, potentially IP access logs) will always be available. What you can do is limit the amount of information a provider requires/saves (for which Proton is a good choice) or don't rely on a company at all and roll your own email server.
Yeah, it's the distinction between "anonymous" and "private".