[joshvm]

Yes, this was revealed by the recent agency leaks. Cracking end to end encryption is still extremely difficult (currently impossible?). It's much easier to get root on a target's phone and run a keylogger or break into the app. The messages are still end-end encrypted, but you can sniff them before they're sent and after they're received since they're shown to the user in plaintext.

[Neliquat]

But then the side channel (pre enc info) is also sent, using different encryption? Otherwise, just as broken.