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. Despite Telegram's origins, its approach to users' security has privacy advocates worried. "He has kind of an old-school cyber-libertarian world view where technology is there to set you free," Maréchal said. 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. Telegram was founded in 2013 by two Russian brothers, Nikolai and Pavel Durov.
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