"And that set off kind of a battle royale for control of the platform that Durov eventually lost," said Nathalie Maréchal of the Washington advocacy group Ranking Digital Rights. 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. In 2018, Russia banned Telegram although it reversed the prohibition two years later. Despite Telegram's origins, its approach to users' security has privacy advocates worried. Founder Pavel Durov says tech is meant to set you free
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