WhatsApp, Signal group chats not as secure as users might believe

by helpnetsecurity 11/01/2018 at 13:38
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Researchers have discovered flaws in the way WhatsApp, Signal, and Threema messaging apps handle secure (encrypted) group communication, which could result in unauthorized users getting added to closed groups and monitoring future conversations within them. The problem with WhatsApp Paul Rösler, Christian Mainka, and Jörg Schwenk analyzed the three widely used protocols and their implementations, and found that if someone – e.g., nation-state backed hackers (illegally), or law enforcement or intelligence agencies (legally) – gains … More →