A hacker going online by the moniker AmFearLiathMor is claiming to have hacked the most popular end-to-end encrypted email service ProtonMail. The hacker claims to have stolen a significant amounts of data from the company. Protonmail denied having been hacked that added that this is just a hoax. The company confirmed to be aware of a limited number of hacked accounts that have been compromised likely through credential stuffing of phishing attacks, but excluded that its systems have been breached.”]
Source: https://securityaffairs.co/wordpress/78133/hacking/protonmail-hacked-hoax.html