7:53 PM
@David天宇Wong don't worry, it has just been here for a few years :P Welcome to the Sidechannel.
2
@David天宇Wong it is, but it is better than Telegram's.
I think the best to answer this would be to ask a formal question on our main site (Title: "Why is Signal better than Telegram?" / "Signal vs Telegram: which protocol is better and why?")
informally (may forget some aspects) I can think of the following points:
a) Signal is made by cryptographers (Marlinspike et al), Telegram's protocol is made by mathematicans w/o cryptographers