Some privacy experts say Telegram is not secure enough Despite Telegram's origins, its approach to users' security has privacy advocates worried. Perpetrators of such fraud use various marketing techniques to attract subscribers on their social media channels. The Dow Jones Industrial Average fell 230 points, or 0.7%. Meanwhile, the S&P 500 and the Nasdaq Composite dropped 1.3% and 2.2%, respectively. All three indexes began the day with gains before selling off. Founder Pavel Durov says tech is meant to set you free
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