In an effort to address the threat, Apple has now updated its “Xprotect” anti-malware system to recognize two different variants of the iWorm malware and prevent them from being installed on users’ machines.
I still haven’t seen an explanation about how it gets into your computer in the first place, but you can check if you’re infected by doing this:
To see if you are infected, go into the Finder and Select Go > Go to Folder…. When the Go to folder sheet appears, enter this folder name:
Now click the Go button. If the Finder tells you the folder can’t be found, you should be OK. If the folder is found, you are likely infected and should consider some anti-virus software or a trip to the Apple Store.
Via Loop Insight