Defense Information Systems Agency

Profile narrative

The Defense Information Systems Agency, also known as DISA, is a combat support agency of the United States Department of Defense that provides information technology and communications solutions to the military, federal government leaders, and other authorized users. Its core mission centers on delivering secure voice, video, and data services, including the protected communications networks used by the President, senior officials, and military commanders worldwide. DISA designs, operates, and maintains the infrastructure that enables classified and unclassified information sharing across defense and civilian agencies, ensuring interoperability and resilience of critical command and control systems. The agency’s headquarters is located in the United States of America, and its services extend to support Department of Defense operations, joint missions, and interagency partners requiring reliable and secure connectivity.

In May 2019, DISA experienced a data breach that unfolded over several months and potentially exposed personal information such as Social Security numbers of an unspecified number of individuals. The agency reported that there was no evidence of compromised data being misused, and it responded by sending notification letters to affected parties, offering credit monitoring services and guidance on mitigation steps. Although the exact origin of the breach and the specific network components involved were not disclosed, DISA stated that it had implemented additional security measures following its investigation. This incident occurred while the agency was concurrently assisting in the reform of government security clearance processes, a role prompted by earlier major breaches at other federal entities.

DISA’s distinguishing attributes include its specialization in safeguarding high‑level government communications and its regulatory influence on clearance reform initiatives, reflecting a deep expertise in cybersecurity risk management and incident response. As a component of the Department of Defense, the agency operates under the authority of the Secretary of Defense and does not have a separate parent or subsidiary structure; its organizational status is that of a direct reporting unit within the DoD’s broader framework. These facts collectively define DISA’s role as a pivotal provider of secure IT and communications services for national security leadership and defense operations.

Incidents

1 incident linked to this organisation.