GSM phones -- call them unsafe, says security expert

(PhysOrg.com) -- A German security expert has issued a warning that billions of mobile phone users who depend on GSM networks are vulnerable to having their personal mail hacked. He blames the problem on network operators that use outdated network security. Karsten Nohl, head of Germany's Security Research Labs, a Berlin-based consulting company, was readying his presentation of study findings for a security convention and highlighted his troubling study results.

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