"He has kind of an old-school cyber-libertarian world view where technology is there to set you free," Maréchal said. Such instructions could actually endanger people — citizens receive air strike warnings via smartphone alerts. Although some channels have been removed, the curation process is considered opaque and insufficient by analysts. The regulator said it had received information that messages containing stock tips and other investment advice with respect to selected listed companies are being widely circulated through websites and social media platforms such as Telegram, Facebook, WhatsApp and Instagram. Friday’s performance was part of a larger shift. For the week, the Dow, S&P 500 and Nasdaq fell 2%, 2.9%, and 3.5%, respectively.
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