Cyber security firm Zimperium has warned of a flaw in the world's most popular smartphone Android operating system that lets hackers take control with a text message. "Attackers only need your mobile number, using which they can remotely execute code via a specially crafted media file delivered via MMS (text message)," Zimperium Mobile Security said in a blog post. You will only see the notification." Android code dubbed "Stagefright" was at the heart of the problem, according to Zimperium.



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