Encryption Flaw Found in Popular Mobile App – WhatsApp IM client
A researcher has found a serious and exploitable flaw in a popular mobile app for instant messaging. Though the app uses RC4 encryption which today isn’t well regarded and might be a concern in its own right, this flaw is about implementation.
You can read about it here. http://www.net-security.org/secworld.php?id=15745
Its not unusual for researchers to find such flaws – and the fact that such research exists is good news as the issues are made public and can be addressed. However this one creates risk for end users as its a) a very popular app so affects a lot of users and b) the flaw permits any old message conversations to be compromised if exploited. So old data is at risk as well as new until there is an app update to fix it.
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