I11 suppoi-t of its mission, the Department of Energy spends over $2 billioil each year on infonnation teclulology and has a current inventory of approxiinately 800 info~mations ystems, including up to 11 5,000 personal computers, many powerful supercomputers, numerous servers, and a broad array of related peripheral equipment. The unclassified computers and electroil~c inelllory devices in these infomlation technology systeins often contain "unclassified controlled infoimation." This tenn includes unclassified controlled nuclear information, proprietary information, export controlled information, official use only inforn~ationa, nd personally identifiable infom~ation(P II), which can include employees' social security numbers, places of birth, and dates of birth.