In 2018, Russia banned Telegram although it reversed the prohibition two years later. After fleeing Russia, the brothers founded Telegram as a way to communicate outside the Kremlin's orbit. They now run it from Dubai, and Pavel Durov says it has more than 500 million monthly active users. 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. Perpetrators of such fraud use various marketing techniques to attract subscribers on their social media channels.
from es