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Earlier this week, hackers (actually researchers) were able to get into a Jeep Cherokee's computer software and remotely manipulated functions to the point of actually shutting the car down. Now FCA (Chrysler) has issued a recall on certain 2013-14 models for software updates to hopefully prevent this in the future. Do you think this might impact the aftermarket industries ability to offer performance and custom "tunes" for new muscle cars and hot imports? Will the OEMs do more to "lock down" the stock calibrations?
 

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Seems likely; there was already another effort to try an limit the accessibility to tune a vehicle due to risk of affecting the emission controls as well as longevity that the design compromised for.

If I understand correctly, the hack that you're referring to involved rewriting the firmware on a controller in the radio which was connected to both a cellular network as well as the CAN bus. afaik, the CAN bus is unencrypted so once they could communicate with the vehicle, they could just inject CAN packets which mimicked sensor/switch output (thus the ECU would respond as if its sensors were reading normally).

The probable first step to fixing this is just to isolate external communications from the CAN bus. Even in any other CAN utilizing car, once you're on the CAN bus you ought to be able to mess with whatever you want (as long as you understand the protocol). I expect that encrypting this communication would limit, but not prevent intrusions (at least, that's how it works on computers). Companies whose livelihood depends upon tuning will have plenty of expertise to reverse engineer the security measures. The ones who will be most affected by such a change will be the opensource enthusiast.
 
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