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. "There are several million Russians who can lift their head up from propaganda and try to look for other sources, and I'd say that most look for it on Telegram," he said. Anastasia Vlasova/Getty Images Sebi said data, emails and other documents are being retrieved from the seized devices and detailed investigation is in progress. Some privacy experts say Telegram is not secure enough
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