Facebook has long-claimed that its WhatsApp messaging service is completely secure and messages cannot be intercepted thanks to its use of end-to-end encryption. But researchers have unearthed what they call a serious security flaw that makes it possible to read encrypted messages. Based on Open Whisper Systems' Signal Protocol, the unique security keys used to implement end-to-end encryption should keep messages secure. But WhatsApp can force offline users to generate new keys and this could allow Facebook -- and third parties -- to read messages. The problem is seen by some a serious one, as WhatsApp's supposed security has earned… [Continue Reading]