Facebook claims that no one can intercept WhatsApp messages, not even the company and its staff, ensuring privacy for its billion-plus users. But new research shows that the company could in fact read messages due to the way WhatsApp has implemented its end-to-end encryption protocol.

Et ça les enfants, c'est la raison pour laquelle le chiffrement, si les implémentations ne sont pas libres, ne vaut rien.
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