But because group chats and the channel features are not end-to-end encrypted, Galperin said user privacy is potentially under threat. False news often spreads via public groups, or chats, with potentially fatal effects. For example, WhatsApp restricted the number of times a user could forward something, and developed automated systems that detect and flag objectionable content. In the past, it was noticed that through bulk SMSes, investors were induced to invest in or purchase the stocks of certain listed companies. Despite Telegram's origins, its approach to users' security has privacy advocates worried.
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