Which agency requires the use of DISS for security clearance processes?

The correct answer is the Department of Defense. The Defense Information System for Security (DISS) is a system used primarily by the Department of Defense and its related organizations to facilitate the security clearance process. DISS manages and stores information related to personnel security for those who require access to classified information.

The Department of Defense oversees a significant portion of the personnel who require security clearances due to the sensitive nature of their work, especially related to national security. By utilizing DISS, the Department of Defense ensures that there is a standardized process for tracking the status of security clearances, managing investigations, and maintaining the integrity of the data concerning cleared personnel.

Other agencies may have their own systems or protocols for handling security clearances, but DISS specifically pertains to the requirements set forth by the Department of Defense.