I have no idea why cars are so vulnerable but it is possible to achieve a pretty high level of protection in electronic components. Have a ROM that verifies the

I have no idea why cars are so vulnerable but it is possible to achieve a pretty high level of protection in electronic components. Have a ROM that verifies the integrity of the Flash memory for example. I just found a patent for that even though it's sort of trivial. Overriding ROM is theoretically possible but can be a very costly operation. In hacks, it's always about the costs. Make the device cheap enough to make the hack expensive enough to discourage theft.