Pentagon Data Breach Incident
A cybersecurity incident involving the U.S. Department of Defense exposed sensitive personal data of over 3 million military and civilian personnel.
December 2024
DMDC Maintained At Least 60 Million Records in Fiscal 2024
The Defense Manpower Data Center (DMDC) maintained a database containing at least 60 million records as of fiscal 2024.
Source ↗October 2025
Unauthorized Users Gained Access to Defense Manpower Data Center Server
Unauthorized users gained access to a vulnerable computer server belonging to the Defense Manpower Data Center (DMDC). This access began in October.
Source ↗Unauthorized users accessed Defense Manpower Data Center server
Unauthorized users gained access to a vulnerable computer server belonging to the Defense Manpower Data Center (DMDC). This unauthorized access began in October 2025.
Source ↗July 2026
Pentagon Discovers and Remediates Data Breach Issue
The Pentagon discovered the data breach nine months after it began. The center subsequently remediated the issue and sent a letter to victims.
Source ↗Pentagon discovered and remediated data breach
The Pentagon discovered the data breach affecting military personnel records. The agency subsequently remediated the security issue.
Source ↗September 2026
Data Leak at the Pentagon Affect Over 3 Million Employees
A data leak occurred at the Pentagon impacting over 3 million military and civilian employees. The incident was reported in a cybersecurity discussion.
Source ↗Pentagon Offers Identity Protection Following Data Breach
The Pentagon stated it has no evidence the stolen data has been used for criminal purposes. Affected individuals are being offered identity protection and credit monitoring services.
Source ↗Pentagon confirms data breach in Defense Manpower Data Center
The Pentagon confirmed a major data breach involving a Defense Manpower Data Center (DMDC) information system. The incident exposed sensitive personal information belonging to over three million people.
Source ↗Pentagon Data Breach Exposes Sensitive Data on 3 Million People
A data breach at the Pentagon exposed sensitive information belonging to nearly 3 million individuals. This incident was reported in the discussion on September 30, 2026.
Source ↗Defense Officials Offer Identity Protection After Pentagon Breach
Defense officials stated they have found no evidence that the exposed information has been misused. They are offering identity protection and credit monitoring resources to those affected.
Source ↗