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> draconian countermeasures are drafted and constructed one by one.

Except when it’s about privacy or anything else we actually care about: then absolutely nothing is done because it would cost more than 0 to do anything.

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On the contrary, lots are being done about it, they have to update their terms of service…
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> Or just a headline "Tinkerer hacked his car to use with his home assistant" in the local press.

It's pretty sad that "User used their product in a novel way we didn't expect" is seen as a risk that must be mitigated.

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I suspect the manufacturer probably cares less about what you do to your own car and hacking it, than they do about the potential for security compromise of their products on a broader scale, where they will then get blamed and sued for not having closed said loopholes. It is a no-win situation when it comes to fault assignment.
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> It is only a matter of time until they add encryption.

I hope I won't be in one of those cars when the in-memory encryption key gets bit-flipped by the unfortunate cosmic ray.

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Proving that autopilot killed that poor old granny because of cosmic rays would be an interesting case study.
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It actually happened with Toyota around 2010: they went into a settlement regarding an unintended acceleration issue because it was proven the code was terrible and a single bit-flip could cause the behaviour.

https://en.wikipedia.org/wiki/2009%E2%80%932011_Toyota_vehic...

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Bit of context to this, it was demonstrated that it was a hypothetical possibility, but the issue couldn't be demonstrated in lab conditions. Stuck floormats, pedals, and confused drivers remain the only actual explanations for the real events behind the lawsuits.
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Very interesting read. Thank you for the link.
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Another interesting case: a proven case of bit-flip that affected a voting machine in Belgium: https://www.independent.co.uk/news/science/subatomic-particl...
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It’s a fair assumption that most of these things are trickle-down effects of CMS/R155 and CRA combined with very high risk aversion on the company side. The less you expose, the lower the risk.
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