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Defense Manpower Data Center.
part of the United States Department of Defense
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Reports: Pentagon Breach Exposes Nearly 3 Million Records
2.76 million living people and 294,000 deceased had Social Security numbers and job details exposed in a Pentagon DMDC breach from October 2025 to July 2026.
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About Defense Manpower Data Center
The Defense Manpower Data Center (DMDC) serves under the Office of the Secretary of Defense to collate personnel, manpower, training, financial, and other data for the United States Department of Defense. This data catalogues the history of personnel in the military and their family for purposes of healthcare, retirement funding and other administrative needs. It has offices in Seaside, California, and Alexandria, Virginia.
Everything about Defense Manpower Data Center →- Inception
- 1974