Pentagon personnel-data breach reportedly affects more than 3 million people
SecurityUnverifiedUpdated:
The notifications reportedly concern more than 3 million people, with exposed records varying by person and including Social Security numbers, names, dates of birth, contact details, and military personnel information.
DMDC notifies military personnel
BleepingComputer reports that the Pentagon's Defense Manpower Data Center (DMDC) is notifying military service members that hackers stole data after exploiting a vulnerability in its human-resources file-sharing systems. The report says Pentagon officials put the number affected at more than 3 million, including nearly 2.8 million living individuals and 294,000 deceased individuals.
No comparable pre-breach figure or condition for the affected records is established in the available report.
DMDC is reportedly notifying affected personnel after unauthorized users accessed sensitive data in its file-sharing systems between October 2025 and July 2026.
Records include living and deceased individuals
The reported incident involves sensitive personnel records at a Defense Department support center and a notification effort affecting millions of people. The reported data categories include identifiers that can be especially sensitive in a data breach.
Sources
- BleepingComputerHackers stole Pentagon personnel records of over 3 million peopleRead source →