Millions of Volkswagens vulnerable to wireless hack

Millions of Volkswagens built over the past 20 years can be broken into with a hack that exploits the cars’ remote control key systems, security researchers have found.

Most VWs built since 1995 use one of a handful of electronic “master keys” to remotely open and lock the doors, and those keys can be extracted by reverse engineering the firmware, the researchers wrote in a new paper. 

That alone isn’t enough to break into a car -- the master key has to be combined with a unique code generated by each remote key device. But the researchers also devised a way to do that, assembling a piece of radio hardware costing around $40.

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