False news often spreads via public groups, or chats, with potentially fatal effects. Telegram boasts 500 million users, who share information individually and in groups in relative security. But Telegram's use as a one-way broadcast channel — which followers can join but not reply to — means content from inauthentic accounts can easily reach large, captive and eager audiences. Despite Telegram's origins, its approach to users' security has privacy advocates worried. For tech stocks, “the main thing is yields,” Essaye said. WhatsApp, a rival messaging platform, introduced some measures to counter disinformation when Covid-19 was first sweeping the world.
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