Reply to post: Re: Alarms

Sons of IoT: Bikers hack Jeeps in auto theft spree

Neil Barnes Silver badge

Re: Alarms

Hah.

I discovered the hard way that the electronic locks on my car can be defeated by a kitchen knife: a cut through the bundle going into the door persuades the controller that the mechanical lock has been properly opened using a key. The controller then politely opens all the deadlocks.

At a guess, the maker used cheap logic on the controller input: either ground or pull-up (so the cut wire gives a pull-up) instead of using the elementary security input of two resistors and an analogue input that would pull to half rail in the case of an open circuit wire...

No names, since the flaw is almost certainly common across the entire range of vehicles from this manufacturer, with whom I am still in discussion.

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