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Mission Areas


Officers in the Security Career Field perform a variety of security, countermeasure, investigative, and law enforcement services to protect and safeguard DIA employees, property, operations, and classified and sensitive information. One example of a security service is the management of the insider threat program, which includes detection and mitigation activities. Officers also provide multidisciplinary security activities in the areas of physical, technical, information, industrial, and personnel security.

  • Criminal Investigator: Criminal Investigators perform a full range of investigations across five functional areas:  investigative actions to thwart the insider threat; support to the Personnel Security Program; criminal investigation matters; investigative support to Physical Security and Force Protection; and investigative support to the Information Security Program for the protection of DIA worldwide. All criminal investigators at full job performance are credentialed 1811 Special Agents of DIA with US Marshall deputation.

  • Insider Threat: Officers in Insider Threat develop, implement, and coordinate activities designed to deter, detect, and mitigate insider threat. They monitor, evaluate, and analyze information systems and other data feeds to detect potential insider threats and provide advice and guidance for threat mitigation. They additionally formulate policies and guidance based on assessment of requirements not addressed in existing security directives and operations; manage, coordinate, and track individual insider threat cases from identification to mitigation; promote awareness of security issues among management and the workforce; and ensure sound security principles are reflected in the organization’s vision and goals.

  • Police: Police Officers perform law enforcement and force protection activities as part of an organized and uniformed police force. They engage in various protective functions to include providing canine services; hazardous materials response activities; antiterrorism assessments; protective security details; special response teams; and global specialized protective operations in support of DIA field operations.

  • Security Specialist: Security Specialists apply broad knowledge and experience in multiple security disciplines (e.g. Personnel, Information, Physical, Industrial, Information Systems, Classification Management, Operations Security and Special Access Programs) to develop, enforce, analyze, and interpret security policies and procedures. They identify program requirements, conduct surveys, perform inspections, conduct trend analyses, and offer security advice and guidance.