A couple university researchers tested out car control system vulnerabilities. They found almost all of them vulnerable to attack. The targeted the communication between the different electronic control units in the car.
They could kill the engine. They could also disable or engage the brakes. They made the instrument panels do what they commanded. These schlubs even made the horn honk. Pretty scary stuff.
The research was to demonstrate the potential risks car have from being hacked. They say that cars not being on the Internet helps thwart some attacks. However defenses need to be designed and implemented now to protect the car driving public.
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