That matters when the authorities show up at Telegram’s facilities with a search warrant.Īlthough you can start Signal chats by typing in another person’s phone number, Telegram requires access to your contacts before you can message anyone. In contrast, Telegram’s metadata may include your IP address (which can give away your location) as well as who you are talking to and when. Signal generally only stores the date on which you created your account as well as the last time you connected. Signal also collects far less data on users than Telegram does. Still, the paper added that “further investigation” is needed “in order to deem this protocol suite definitely secure”. However, the consensus seems to be that the latest version is more secure than MTProto 1.0 (opens in new tab) (PDF).Īccording to an academic research paper (opens in new tab) published in 2020, Telegram’s MTProto 2.0 protocol is fundamentally sound.

Many security experts have stated that Telegram’s ' homegrown encryption technology (opens in new tab)' has a limited track record compared to Signal's. For its encrypted Secret Chats, Telegram uses its own MTProto 2.0 protocol which is open source on the client side.

Telegram messaging service