The Security Service of Ukraine said in a tweet that it was able to effectively target Russian convoys near Kyiv because of messages sent to an official Telegram bot account called "STOP Russian War." Artem Kliuchnikov and his family fled Ukraine just days before the Russian invasion. Telegram was founded in 2013 by two Russian brothers, Nikolai and Pavel Durov. Stocks dropped on Friday afternoon, as gains made earlier in the day on hopes for diplomatic progress between Russia and Ukraine turned to losses. Technology stocks were hit particularly hard by higher bond yields. Some privacy experts say Telegram is not secure enough
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