Girl Doll Dressed is the most famous corrupted CC in the Simming World. Even EA knows about it, and warns people to uninstall it before Updating the game.
Now, it was created by a newbie CC-maker, but very badly. It attaches itself onto .thesims3pack files that you upload, and will spread like wildfire through the Exchange. Since then, the maker has taken it off the Exchange, and re-meshed it to make it safer.
Of course, it still reigns havoc. And Chronic posted at the same time as me. Both pieces of information should be correct (Both mine and his).