Defense Security Service

Overview
The Defense Security Service (DSS) implements the National Industrial Security Program at about 12,000 cleared defense contractor facilities across the United States. On the basis of suspicious incidents reported by contractors, DSS counterintelligence (CI) traces and analyzes the changing nature of the threat to U.S. technologies. CI specialists teamed with DSS Industrial Security Specialists on nearly 191 security reviews of contractor facilities, using current threat information to assist contractors in developing tailored security countermeasures.

Source

 * 2008 Annual Report to Congress on Foreign Economic and Industrial Espionage, at 5.