category 1 foreign nation states: China, Iran, Russia
category 2 the USSA's deep state: either they are trying to steel the election(trump) or they are covering up steeling the election(Biden) or their just they are just trying to justify harsher lockdowns(fauci).
category 3 individual actors: Right wing extremists, leftwing extremists, Islamic extremists or just an enraged former employee who's pissed about getting fired.
Thoughts?
category 4 it's part of an elaborate "jewel heist" and the thieves were knocking out communications with the blast so they could pull a job in a building affected by the outage.
It's the type of thing Walter White or Danny Ocean would come up.
This is what I would do to prevent alarms or comms going out from the heist location.