zlacker

>>pera+(OP)
Signal exposes the user's phone number, better alternative is to use burner phones or Telegram.

>>kome+uq
Telegram doesn't have encryption for groups though.

>>soziaw+Gu
Actually they do: https://telegram.org/faq#q-so-how-do-you-encrypt-data , but since group chats are using Telegram's servers the encryption is not client-to-client. Here is the actual specification of how does their srever-client encryption work: https://core.telegram.org/mtproto