>>/1339/
https://archive.fo/20M7z
We'll see where this goes. If you use protonmail, encrypt your messages with your own pgp key. Don't rely on any third party to keep your messages safe.
This just puts proton mail into gmail territory. If you want real email security follow the general steps posted here:
>>/992/
>>/1211/
Even if you use gpg and the attacker has access to the encrypted cypher text, frequency analysis can be used to perform probabilistic decryption, and then check words against a dictionary to confirm the decryption (completely automated). So add alot of noise to lower the signal to noise ratio if your cypher text is stored remotely by a third party. I'm removing protonmail from the recommended carriers if this attack is confirmed with evidence.