[MatthiasP]

Atleast WhatsApp is end-to-end encrypted unlike Telegram.

[kerng]

I think Telegram is pretty secure, given that some nations want or have already attempted to entirely block it to prevent its usage by citizens.

[out_of_protocol]

Without end to end encryption? Not really. Mosty relies on "trust"

[Aegaeus10111]

Secret chats aren't 2e2 encrypted?

I looked at their sceme and can't figure it out. How does T's regular scheme work - server encrypted? That wouldn't make much sense :-)