Send and Pretend: Exploiting Transcript Consistency Issues in End-To-End Encrypted Group Chats

End-to-end encrypted E2EE messaging apps are widely praised for their security and thus also used for sensitive coordination in group chats e.g., by political decision makers. After Threema and WhatsApp, also Signal and iMessage have recently introduced polls to aid agreement processes in groups...

WhatsApp turns on End-to-End Encryption by default for its 1 Billion Users

WhatsApp is updating its messaging app so that every text message and voice call will be encrypted for the company’s one billion users. Yes, Whatsapp has finally implemented full end-to-end encryption, as promised a year ago. This means, from now every message, image or voice call you made will b...