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Defense Manpower Data Center
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- 1Pentagon personnel data breach notifications begin●US Defense Manpower Data Center (DMDC), which maintains personnel records for the Pentagon, has started notifying people
The US Defense Manpower Data Center, which holds personnel records for the Pentagon, has begun notifying individuals that their personal information was exposed. Notifications state that analysis identified a small number of unauthorized users accessing data between October 2025 and the date of discovery. The scope of the exposure and how many people are affected have not been detailed in the notice.
- 2Pentagon DMDC breach exposes records of over 3 million people▼Pentagon DMDC data breach exposes records of over 3 mn people
A data breach at the Pentagon's Defense Manpower Data Center has exposed the personal records of more than 3 million people. The DMDC holds personnel and benefits data for US service members, retirees and defence employees. The scope of the breach and who is behind it remain under review, and cybersecurity watchers are flagging the incident as a significant government data exposure.