Since they use their own in house crypto, most people don't consider it trustworthy: https://security.stackexchange.com/questions/49782/is-telegram-secure/4980

Since they use their own in house crypto, most people don't consider it trustworthy: https://security.stackexchange.com/questions/49782/is-telegram-secure/49802#49802 https://security.stackexchange.com/questions/49782/is-telegr...