Founder Pavel Durov says tech is meant to set you free 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. I want a secure messaging app, should I use Telegram? Despite Telegram's origins, its approach to users' security has privacy advocates worried.
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