It's kinda weird in case of cars. The "PSU" (the device that converts current and voltage and sets the right value for charging) in case of AC charging is in the car, but for DC charging it's pretty much "car asks for that much current, charger provides".
So DC charger going haywire could damage the battery, and say DC charger putting high voltage on the control lines could also do some damage. Protecting against both is possible, just adds cost
So DC charger going haywire could damage the battery, and say DC charger putting high voltage on the control lines could also do some damage. Protecting against both is possible, just adds cost