Also, I’ve got an email about any freshly imaged Mac Mini from Hetzner. Turns out macOS runs with legacy netbios ports open to the wide world by default, but to disable that service, you have to unload a service via Terminal. There’s no prefpane for that.

I received their emails a couple of times.

Not sure if a cost-benefit analysis would find such ops positive for the society.

Think of the time wasted by people who read such emails vs the money spent protecting from attacks.

Factor in the cost to the taxpayer.

That's a good topic for a Master thesis in Economics.

Anyone interested?