Proton is investigating a critical issue affecting its Mail and Meet applications on macOS. Some users are encountering error messages indicating the apps have been flagged as malware—a misclassification that Proton says poses no actual security threat.
Proton provides encrypted email and communications services used by millions worldwide for secure messaging and collaboration.
The issue stems from the revocation of one of Proton's Apple developer accounts earlier today, which caused previously legitimate apps to be blocked at the operating system level. Proton is working with Apple to resolve the matter. Meanwhile, the company recommends macOS users access its services through web applications.
This is a developing story; further updates will be provided as more information becomes available.
