Windows Security Issue?

[Quiver he/him]

So... a friend of mine was just mentioning that there is some security issue with the current version of Windows, and that there was an update available for it?

I admit, I know absolutely nothing about computers, so I hadn't heard anything, but... yeah. Was wondering if anyone could confirm that?
(And also, how does one update an OS? I always just wait until I get a text box saying that the computer needs to restart and let it handle that stuff on it's own...)

[Modal Seoul he/him]

That issue happened to my entire neighborhood.

And yes, I believe there is an update that fixes it.

[Chaos he/him]

The particular "ransomware" has already been disabled--there was apparently a kill switch in the software--and in any case the update has already rolled out to everyone. No need to worry. 

[Oversleep]

17 hours ago, Chaos said:

The particular "ransomware" has already been disabled--there was apparently a kill switch in the software

I've heard the virus mutated to not contain killswitches.

Now, when did I last updated my OS...

[Chaos he/him]

Yeah, I heard, but it still doesn't matter because Windows auto-updates to annoying degrees.