For RO members who are still using Windows XP, Microsoft has issued emergency security patches to prevent the recent "WannaCry"ransomware virus from affecting your PC.
Here's more info and links to secure patch downloads:

https://blogs.technet.microsoft.com/msrc/2017/05/12/customer-guidance-for-wannacrypt-attacks/

If you are running more contemporary Windows versions, this security patch would have been installed in a recent automatic update, if your PC is set to allow automatic updates. If you currently have updates disabled, you might want to allow this security patch to be installed on your system.
But for those RO members who are still using XP, you know that Microsoft ceased supporting the XP system last year, but they've written a new "emergency patch" for XP because of recent world-wide ransomware attacks.
If you run XP (and are online) you should take a look st this new security patch.

FWIW
-d.