Telegram does offer end-to-end encrypted communications through Secret Chats, but this is not the default setting. Standard conversations use the MTProto method, enabling server-client encryption but with them stored on the server for ease-of-access. This makes using Telegram across multiple devices simple, but also means that the regular Telegram chats youโre having with folks are not as secure as you may believe. I want a secure messaging app, should I use Telegram? Founder Pavel Durov says tech is meant to set you free If you initiate a Secret Chat, however, then these communications are end-to-end encrypted and are tied to the device you are using. That means itโs less convenient to access them across multiple platforms, but you are at far less risk of snooping. Back in the day, Secret Chats received some praise from the EFF, but the fact that its standard system isnโt as secure earned it some criticism. If youโre looking for something that is considered more reliable by privacy advocates, then Signal is the EFFโs preferred platform, although that too is not without some caveats. This ability to mix the public and the private, as well as the ability to use bots to engage with users has proved to be problematic. In early 2021, a database selling phone numbers pulled from Facebook was selling numbers for $20 per lookup. Similarly, security researchers found a network of deepfake bots on the platform that were generating images of people submitted by users to create non-consensual imagery, some of which involved children.
from ms