Oleksandra Matviichuk, a Kyiv-based lawyer and head of the Center for Civil Liberties, called Durov’s position "very weak," and urged concrete improvements. Despite Telegram's origins, its approach to users' security has privacy advocates worried. "He has kind of an old-school cyber-libertarian world view where technology is there to set you free," Maréchal said. But Kliuchnikov, the Ukranian now in France, said he will use Signal or WhatsApp for sensitive conversations, but questions around privacy on Telegram do not give him pause when it comes to sharing information about the war. Some privacy experts say Telegram is not secure enough
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