China hackt Amerikas kritische Infrastruktur, warnt der ehemalige NSA- und pensionierte General Tim Haugh

Because… companies are cheap bastards.

Everything is controlled by a handful of corporate people with their computer network. Because…

Hiring people at the switching stations to direct the flow of electric energy, natural gas, gasoline, water treatment plants with computers that are not online would cost too much.

Corporate would call the switching stations and direct their employees. You would have a hard time hacking into that.