I wonder how true this is. I can’t imagine such systems would be hooked up to the Internet for any reason. Of course, people who work for these companies could be in a position to breach security...
It is sheer criminal negligence to put critical systems like this on the internet. The results were predictable.
I say let the indictments fly.
Your guess is as good as mine but don’t they have controlled outages in California? If so, I would suspect that computers is how they control them.
The grids are controlled by data circuits which isn't quite the same thing. But communication that travels on wire or air is hackable. The only question left would be how easy it would be to do so. For what's it's worth many utilities now can have an on call employee manually reset sub station switches after hours at their home via computer link up.
They are, for remote monitoring and the ability to adjust quickly to a changing situation such as an unplanned outage.