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Pentagon hit with class action over data breach affecting millions of military members
The suit says intruders accessed unencrypted personal data and seeks more than $5 million for over 3 million servicemembers.
On Monday, a current and former Marine filed a class action lawsuit against the U.S. Defense Department in Washington, alleging the agency failed to secure sensitive data for more than 3 million military members.
Intruders allegedly exploited a vulnerability in a personnel-records file-sharing system at the Defense Manpower Data Center, allowing access to unencrypted personal data including Social Security numbers and dates of birth.
The lawsuit alleges the department showed "flagrant disregard for the privacy interests of servicemembers and other military-adjacent individuals," with plaintiffs seeking damages exceeding $5 million in federal court.
Although no misuse was identified in prior investigations, the complaint warns affected individuals face long-term identity theft risks because Social Security numbers cannot be replaced like passwords.
This litigation follows a pattern of federal cyber breaches; in 2022, the U.S. Office of Personnel Management agreed to pay $63 million to resolve a similar class action lawsuit.