But because group chats and the channel features are not end-to-end encrypted, Galperin said user privacy is potentially under threat. Some privacy experts say Telegram is not secure enough Telegram was founded in 2013 by two Russian brothers, Nikolai and Pavel Durov. Such instructions could actually endanger people — citizens receive air strike warnings via smartphone alerts. "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.
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