When you do not do the normal things users do to be protected, that means fully update when updates are available and patch,
this could be a threat on your computer, even windows XP now comes patched.
When you are on a vulnerable system with certain connections to the Internet and have XP installed in a British NHS hospital for instance, because of costs and convenience, you have to send your patients home, cannot perform heart surgery etc. This is bad as bad can be.
Who is to blame, protest should go to the NSA spooks that developed this malware and leaked it to ruthless cybercriminals later.
This people that think they are above the law and believe in a “noble lie” are causing such international predicaments.
We should not love them.
polonus