Stocks closed in the red Friday as investors weighed upbeat remarks from Russian President Vladimir Putin about diplomatic discussions with Ukraine against a weaker-than-expected print on U.S. consumer sentiment. "He has kind of an old-school cyber-libertarian world view where technology is there to set you free," Maréchal said. I want a secure messaging app, should I use Telegram? Such instructions could actually endanger people — citizens receive air strike warnings via smartphone alerts. Founder Pavel Durov says tech is meant to set you free
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