Octo was running 8.1 with no updates, we installed the patch MS issued today.
The other two machines are on 10, so we're good.
As far as nuke plants...
I would have thought they run on Linux with specialty software... apparently the cheap mother forkers are still on xp.
In all fairness to Microsoft, they did issue a patch for XP even though the OS is no longer supported and kudos for doing the right thing, but how many actually patched it?
Those patches don't install themselves.