If your power systems are not on the net, they cannot be hacked. Power companies eliminated many jobs by using internet connections. The savings at the price of more risk will seem stupid in the future.
Matter of time
It wasn't the power grid, but about a year ago in north Georgia a cell phone switching station lost power and the backup generator failed. Everybody in Georgia north of Macon (about the middle of state) lost cell phone service. People went NUTS.I can't imagine if Georgia Power's grid went down.
OH NOOOOOOS blind peaches.
Not at all. If they are not connected to the outside world, they can only be accessed from within.
One Second After was a pretty good read.https://www.amazon.com/Second-After-John-Matherson-Novel/dp/0765356864
Thanks. I was looking for something good for my next Audible credit. I'm a sucker for apocalyptic stories.