I Believe They Do...Just Not As Much As The Other Sections.
You've Got to Admit...This Section Is Pretty Self-Dependant Considering That .Rez Files Don't Contain Viruses (Well At Least No One Has Bothered To Try Yet) They Might Just End Up Making Attachments Automatically Approved. I Don't Know. Were Too Early Into The Modding Race To Really See How it Develops.