Individual messages can be fully encrypted. But the user has to turn on that function. It's not automatic, as it is on Signal and WhatsApp. Just days after Russia invaded Ukraine, Durov wrote that Telegram was "increasingly becoming a source of unverified information," and he worried about the app being used to "incite ethnic hatred." For example, WhatsApp restricted the number of times a user could forward something, and developed automated systems that detect and flag objectionable content. "This time we received the coordinates of enemy vehicles marked 'V' in Kyiv region," it added.
from ru