I had a Intel Macbook Air, the one with the power button right next to the backspace. I ran a script I found in the Mac forums to make it so you have to hold the power button instead of tapping it. Turns out that script had a trojan in it and they had to factory reset my mac and wipe my iCloud to get rid of it.
It had a GUID in it and apparently that can just download a resource from anywhere. I assumed it was an unlabeled internal variable.