Defense Security Service (DSS) is the largest security agency in the federal government, dedicated to safeguarding America's trusted workforce and workspaces. With a mission to protect classified and sensitive information, DSS provides personnel security background investigations, clearance processes, and security training for over 100 federal entities, 10,000 cleared companies, and conducts 2 million background investigations annually.
As a vital component of the United States Department of Defense, DSS plays a crucial role in countering foreign intelligence threats to the nation's defense industrial base. Through its Consolidated Adjudication Services (CAS) and Industrial Security programs, DSS ensures the integrity and protection of classified information and technologies, while also assisting facility security officers in maintaining personnel security clearances and implementing mitigation processes to address foreign ownership, control, or influence (FOCI).
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