But because group chats and the channel features are not end-to-end encrypted, Galperin said user privacy is potentially under threat. He adds: "Telegram has become my primary news source." Despite Telegram's origins, its approach to users' security has privacy advocates worried. Russian President Vladimir Putin launched Russia's invasion of Ukraine in the early-morning hours of February 24, targeting several key cities with military strikes. Some privacy experts say Telegram is not secure enough
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