Pentagon data breach exposes Social Security numbers, personal info of 2.76M US military, civilian personnel
A security flaw in a file-sharing system exposed unencrypted personnel records, and the Pentagon said 2.76 million living people were affected.
- The Defense Manpower Data Center discovered a "security vulnerability" in a file-sharing system in July that allowed unauthorized users to access unencrypted personally identifiable information between October 2025 and July 16, 2026.
- Approximately four million Defense Department personnel may be affected by the breach, which exposed Social Security numbers and the "occupational specialty" of service members.
- The Defense Department is offering affected individuals one year of credit monitoring through IDX, while Gen. Paul Stanton, director of the Defense Information Systems Agency, is leading a "cyber hunt" to evaluate systems for additional vulnerabilities.
- Justin Sherman, CEO of Global Cyber Strategies, warned adversaries could pair stolen information with commercial datasets to target personnel based on earnings, debts, marriages, and spending habits.
- While the Pentagon currently "does not have any indications of misuse," the DMDC remains "the one, central access point" for military benefits and medical readiness information for personnel and veterans.
171 Articles
171 Articles
Pentagon personnel breach — undetected for months — renews cyber standard scrutiny
Unauthorized users accessed sensitive records for roughly nine months before discovery, exposing another government personnel data fiasco as the FBI confronts its own breach incident.
AI doesn’t need to hack the Pentagon to threaten its people
A year of credit monitoring can help an American service member detect identity theft. It cannot tell that person whether a foreign intelligence service is assembling a dossier around the exposed record. That is the gap raised by the Pentagon’s newly disclosed personnel data breach. A U.S. defense official told ABC News that the incident […]
Social Security numbers exposed in Pentagon data leak affecting millions
Personal information of millions of military-connected people were exposed in a months-long data breach at the Defense Manpower Data Center.
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A bug in a file-sharing service exposed sensitive employee data and allowed malicious actors to extract information on millions of people.
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