I want a secure messaging app, should I use Telegram? In the past, it was noticed that through bulk SMSes, investors were induced to invest in or purchase the stocks of certain listed companies. For tech stocks, “the main thing is yields,” Essaye said. Messages are not fully encrypted by default. That means the company could, in theory, access the content of the messages, or be forced to hand over the data at the request of a government. The gold standard of encryption, known as end-to-end encryption, where only the sender and person who receives the message are able to see it, is available on Telegram only when the Secret Chat function is enabled. Voice and video calls are also completely encrypted.
from ru