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. Founder Pavel Durov says tech is meant to set you free Such instructions could actually endanger people — citizens receive air strike warnings via smartphone alerts. Anastasia Vlasova/Getty Images WhatsApp, a rival messaging platform, introduced some measures to counter disinformation when Covid-19 was first sweeping the world.
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