Simple security for wireless: no password required

In early August, at the Def Con conference — a major annual gathering of computer hackers — someone apparently hacked into many of the attendees’ cell phones, in what may have been the first successful breach of a 4G cellular network. If early reports are correct, the incident was a man-in-the-middle (MITM) attack, so called because the attacker interposes himself between two other wireless devices.

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