"Your messages about the movement of the enemy through the official chatbot โฆ bring new trophies every day," the government agency tweeted. But because group chats and the channel features are not end-to-end encrypted, Galperin said user privacy is potentially under threat. "And that set off kind of a battle royale for control of the platform that Durov eventually lost," said Nathalie Marรฉchal of the Washington advocacy group Ranking Digital Rights. Some privacy experts say Telegram is not secure enough
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