Rikkitic:kiwifidget:How can you tell if your PC has the patch or not?
If you have automatic updates turned on, you should have it. One way is just to download it for your computer and try to install it. Here is the link.
As above
It will spread through the normal manner - email etc but if you don't have the patch for "Emerald blue" then it will use that vunerability as well
I imagine by now most good AV signatures have been updated
Clint