Sure, but only if they think of it. I doubt "hacked ECU" is at the top of the list when they start investigating causes. On the other hand, I guess once they f

Sure, but only if they think of it. I doubt "hacked ECU" is at the top of the list when they start investigating causes. On the other hand, I guess once they figure out you crashed without braking (no skid marks) but were still conscious when you did so (you've probably tried swerving to avoid an accident) they'll pretty quickly narrow it down to complete brake failure, which I guess has a much smaller list of possible causes, especially if the brakes look physically okay.