this post was submitted on 28 Dec 2025
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Couldn't a savvy user just find an exploitable firmware revision, never connect the vehicle to the internet, and install aftermarket software or hardware to bypass the authentication checks? It would be more of a pain in the ass than the previous drop in system, but I'd imagine it's possible.
Depends on how heavily things are locked down, and how much money this tech-savvy person is willing to risk on a bricked automobile.
If the auto industry successfully locks 99.9% of their buyers into their walled garden by making it such a pain in the ass to bypass it, they’ve already won.
The vehicle comes from the factory connected to the internet.
You'd have to find the exploit before they do, and it would be hard to replicate because once they find out, the only cars vulnerable to your exploit are ones manufactured before the patch who have been disconnected from the internet (which is like 2 cars).
It's theoretically possible but very hard to replicate. And on top of that theres always the risk of the car manufacturer voiding the warranty on your $50k vehicle and/or cozying up to your insurance company and convincing them any damage is a result of you preventing their systems from running as intended.
It's a messy high risk low reward game to play. Better option is to just buy a different car if you can.