Signal private messenger review7/29/2023 ![]() 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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