After fleeing Russia, the brothers founded Telegram as a way to communicate outside the Kremlin's orbit. They now run it from Dubai, and Pavel Durov says it has more than 500 million monthly active users. Such instructions could actually endanger people — citizens receive air strike warnings via smartphone alerts. Perpetrators of such fraud use various marketing techniques to attract subscribers on their social media channels. In the United States, Telegram's lower public profile has helped it mostly avoid high level scrutiny from Congress, but it has not gone unnoticed. Some privacy experts say Telegram is not secure enough
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