For the experts on electronics here. Lets imagine a theoretical scenery when some undisclosed vulnerability would allow somebody to hack the system, create a vo

For the experts on electronics here. Lets imagine a theoretical scenery when some undisclosed vulnerability would allow somebody to hack the system, create a voltage spike and emit sparks remotely, triggering multiple fires at a desired place, from the other coin of the planet. Do you think that this could be a realistic danger? (or not because there are systems put in place that avoid it?) If yes, how we could suspect foul game and hunt that person, or how the electric companies could defend its property against that possibility [1]? [1] (I understand that the companies should have removed any flammable materials under the lines first to avoid negligence)