Perpetrators of such fraud use various marketing techniques to attract subscribers on their social media channels. Despite Telegram's origins, its approach to users' security has privacy advocates worried. 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. Messages are not fully encrypted by default. That means the company could, in theory, access the content of the messages, or be forced to hand over the data at the request of a government. Founder Pavel Durov says tech is meant to set you free
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