Pentagon data breach exposes records of over 3M people

What happened: The Pentagon's Defense Manpower Data Center suffered unauthorized access to personally identifiable information by a small number of unauthorized users between October 2025 and July 2026. Why it matters: The accessed files contained unencrypted data, including Social Security numbers, creating a long exposure window. The department says it has no indication the information has been misused. Notifications are being sent by mail through IDX.

The Pentagon's Defense Manpower Data Center suffered unauthorized access to personally identifiable information by a small number of unauthorized users between October 2025 and July 2026.

The accessed files contained unencrypted data, including Social Security numbers, creating a long exposure window. The department says it has no indication the information has been misused. Notifications are being sent by mail through IDX.