Two days after Russia invaded Ukraine, an account on the Telegram messaging platform posing as President Volodymyr Zelenskiy urged his armed forces to surrender. Anastasia Vlasova/Getty Images Such instructions could actually endanger people — citizens receive air strike warnings via smartphone alerts. For example, WhatsApp restricted the number of times a user could forward something, and developed automated systems that detect and flag objectionable content. Pavel Durov, Telegram's CEO, is known as "the Russian Mark Zuckerberg," for co-founding VKontakte, which is Russian for "in touch," a Facebook imitator that became the country's most popular social networking site.
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