WhatsApp, a rival messaging platform, introduced some measures to counter disinformation when Covid-19 was first sweeping the world. Despite Telegram's origins, its approach to users' security has privacy advocates worried. NEWS Individual messages can be fully encrypted. But the user has to turn on that function. It's not automatic, as it is on Signal and WhatsApp. The Russian invasion of Ukraine has been a driving force in markets for the past few weeks.
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