Signal and Telegram soaring Apple App Store There is a “secret chat” option, where one user can message another using end-to-end encryption between the two devices and bypassing Telegram’s cloud, but this does not extend to groups. Telegram does not offer end-to-end encryption by default. Ironically, users moving from WhatsApp to Telegram are making a regressive move from a security standpoint. The situation with Telegram is very different. Signal does not offer any such option, for security reasons. WhatsApp’s main security weakness is its cloud backup option, which stores your chat history, absent end-to-end encryption in Google’s or Apple’s cloud.
But both are end-to-end encrypted-your content is safe. Both use Signal’s encryption protocol, but whereas Signal’s is fully opensource, meaning it can be examined for vulnerabilities by security researchers, WhatsApp uses its own proprietary deployment. Signal’s security is better than WhatsApp’s. Yes, there have been examples of WhatsApp’s security being compromised, most famously by alleged Israeli spyware in 2019, but these are endpoint compromises-attacks on phones, not weaknesses in WhatsApp’s own infrastructure. WhatsApp popularized end-to-end encryption, where only the sender and recipients of a message can read its contents, and it deserves great credit for this and for defending the use of such security despite the efforts of lawmakers to mandate backdoors.
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