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Hope it doesn't infect the thinly papered over Android based "OS" on my car's dashboard.

I authorized the car to my home's WiFi in hopes that there would be updates. Instantly regret. :/

Do I dare even turn it on now?

Block internet access from your car at the router if you're that worried about it.

Adversaries can leverage telematics(free Linux box and LTE module that works like Google Analytics for manufacturers) module or passenger’s phones

If that's an actual, founded concern, in your threat model then you should not get in any vehicle with an ecm, nor have a consumer cell phone. I suppose if you strip out the wireless com module may negate most issues, however your vehicle would still be susceptible to various other attack vectors that you won't have in purely mechanical vehicles.

Indeed. I ended up turning off home network, starting it up and removing all remote connection profiles. :shrug:

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