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Re:Jeff Bezos's phone 'hacked by Saudi crown prince' by jchw on Tuesday January 21, 2020 @10:19PM (#22114273)
Telegram also supports proper E2E in the form of secret chats, though the UX is definitely not as good (for example, last I checked it did not support group chat or multi device.)
Re:Jeff Bezos's phone 'hacked by Saudi crown prince' by cies on Wednesday January 22, 2020 @04:25AM (#22115948)
EDIT: Was under the impression Telegram served closed source clients. Turns out it does not. I stand corrected.

OLD COMMENT:

E2e using a client that is not opensource (on a system that is not trusted) is not helping much.

E2e where the server is not open source should be okay, because the server-end can only snoop on some meta data (how much, when, what IP, chunk sizes, etc.) but not the content.

Re:Jeff Bezos's phone 'hacked by Saudi crown prince' by jchw on Wednesday January 22, 2020 @04:39AM (#22116007)
The Telegram clients are open source.
Re:Jeff Bezos's phone 'hacked by Saudi crown prince' by cies on Wednesday January 22, 2020 @05:50AM (#22116336)
oops. i'll fix it. tnx for pointing out.