A lot of infrastructure is built with some concept of defense in mind from public trash cans to nuclear power plants.
The electrical grid is largely ignored because it’s so big and distributed over such a large area it’s difficult for small groups to attack it successfully. So the focus is on limiting cascading failures. Shooting equipment only caused local damage and things got back to normal in a week.
It was unpleasant for those affected, but you can catch people conducting repeated attacks a lot easier than you can harden all this infrastructure.
"The rise was caused by heavy military vehicles stirring contaminated soil in the 4,000-sq-km (2,485 sq-mile) exclusion zone surrounding the abandoned plant, Ukraine's State Nuclear Regulatory Inspectorate reported ."
"Close to the reactor, you would normally receive a dose of about three units - called microsieverts - every hour. But on Thursday, that jumped to 65 microSv/hrs - about five times more than you would get on one transatlantic flight."
https://web.archive.org/web/20220225165134/https://www.bbc.c...
65 microSv or 65 µSv is a really trivial amount. It should inspire a yawn not a yikes.
Doesn’t sound trivial. You go on enough high altitude flights, you will suffer cellular damage- and this dose is occurring daily. Furthermore, this current situation could easily worsen if further damage is done to the nuclear plants.
In the current climate I would have assumed it was Russian probing of critical infrastructure. There have been isolated attacks on pipelines, transport, and communication cables in various western countries.
Interestingly, I'd wager that very little infrastructure in developed countries was designed with any thought of defending it from it's own citizens.