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

WhatsApp Signal group chats

 

 

 

 

 

 

 

 

 

 

 

 

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.

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 control of WhatsApp’s servers, they could easily insert a new member in a private group without the permission of the group’s administrator(s).

Read more at: www.helpnetsecurity.com

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