To add to these guys, what it looked like in hospitals was all computers going blue screen of death on a loop. You would reboot and it would get to the desktop and go BSOD again. Communications with windows servers also went down.
The problem is, the safety plans are contingent on having windows working. There’s little to no contingent on no windows, people just expect it to always be there.
I and my team and all the individuals we ended up responsible for were fine by morning, but it was not a safe time.
911 was affected. Ambulance dispatch was affected. Many medical based institutions rely on windows and these security systems as well as airlines and such.
That said, please check on grandma, your favorite old uncle, single parent living solo, and all the rest today. There is no telling how many people are dead or injured in homes right now who couldn’t get through to emergency services last night. Maybe still can’t today.