linjian

Yes, they really should. Some important facility should not use window anymore because it is too open to the public to hold an attack. Or the hospital's computer should not be connected to the internet. Most of the time the computers within a hospital are just doing local task.

How to prevent an attack from internet is really a big problem. More open the system is, more dangerous the system maybe. like this attack, the macOS and Linux is safe. Maybe just because the system is not that open and malicious program cannot get some access to do something bad. And usually the update to prevent some kind of attack is later than the attack itself.