Lawsuit claims WhatsApp encryption is a lie; cryptography professor weighs in

Published: Feb 3nd 2026 12:13am on 9to5Mac

Both the founders of WhatsApp and current owner Meta state that the app uses end-to-end encryption, meaning that nobody outside the chat can access the content. A lawsuit claims that this isn’t true and that anyone inside Meta can get full access to all of the messages sent or received by any WhatsApp user.

Johns Hopkins University professor and cryptographer Matthew Green has weighed in with a blog post analyzing the claims and likely reality …

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