Hackers stole millions of US military personnel records during months-long data breach
The U.S. government is reportedly alerting millions of current and former U.S. military service members and staff that their personal information was stolen during a months-long breach of the Pentagon’s personnel records, the latest in a spate of thefts involving federal workers’ data in recent months.
A data breach notification from the Defense Manpower Data Center (DMDC) shared on Reddit says that several unauthorized users exploited a security vulnerability in an unspecified file-sharing system over several months between October 2025 and mid-July 2026.
The breach exposed personally identifiable information, including Social Security numbers, alongside a person’s name, date of birth, sex, race, and other information about their military service. The notice says that the personnel records were unencrypted.
According to CNN and Federal News Network, a Pentagon official said the breach affects about 2.8 million living people, and close to 300,000 people who are deceased.
The U.S. military has...
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