Fair assessment. I assumed spyplane because it also affected Italy and Greece, so there was a long arc of a flight path. It's possible it could have been the orbit of a russian electronic warfare satellite as well, as if you have a transmitter on it, encoding radio packets of death against poorly maintained linux kernel forks (hugely assuming that's what the terminals ran) is as trivial as loading a metasploit payload. I'm well into speculative fiction, but casting magic spells that stop machinery en masse isn't magic at all - and well within the capabilities of armchair admirals of electronic warfare who read and post on HN.

It would be interesting to see if there was any timestamp data about the order in which the terminals failed, as that would yield the flight path evidence, or indicate the presence of local transmitters in those regions, or if it were async, an internet based attack.

Reality is, the gear that runs critical infrastructure is still a joke, and I've said before that western exposure to cyber vulnerability will cause the US/NATO to hesitate in responding to Russian and Chinese aggression because they have to take on that domestic political risk of infrastructure failure, and in conflict, often hesitation is sufficient. Weakness invites predators, and here we are.