Graham Cluley reports:
WhatsApp likes to brag about its end-to-end encryption, but researchers from Germany’s Ruhr University Bochum have discovered a flaw that could allow unwanted eyes to spy upon your private group chats.
In a technical research paper that explores the end-to-end security of three different secure messaging apps capable of allowing “private” group chats, researchers found the most serious shortcomings in the immensely popular WhatsApp platform.
The research paper, presented at the Real World Crypto security conference in Switzerland, describes how it would be possible for a complete stranger to add themselves to an encrypted WhatsApp group chat. Although past messages sent to the group would not be visible to the intruder, they could receive future messages.
Read more on The State of Security.