WhatsApp backdoor allows snooping on encrypted messages | Technology

" Some might say that this vulnerability could only be abused to snoop on ‘single’ targeted messages, not entire conversations. This is not true if you consider that the WhatsApp server can just forward messages without sending the ‘message was received by recipient’ notification (or the double tick), which users might not notice. Using the retransmission vulnerability, the WhatsApp server can then later get a transcript of the whole conversation, not just a single message "

WhatsApp backdoor allows snooping on encrypted messages

https://www.theguardian.com/technology/2017/jan/13/whatsapp-backdoor-allows-snooping-on-encrypted-messages?CMP=Share_AndroidApp_Google%2B? WhatsApp backdoor allows snooping on encrypted messages | Technology | The Guardian