US Social Security Administration Death Master File (SSA DMF) Data Breach
In June 2022, the full United States Social Security Administration (SSA) Death Master File (DMF), historically maintained to document reported deaths across the United States, was released on BreachForums.
Exposed Data Types
5- Social security numbers
- Names
- Dates of birth
- Dates of death
- Geographic locations
About This Breach
The exposed 8.66 GB archive (DMF.txt) comprises approximately 94,842,000 historical vital records. Technical examination confirms standard SSA fixed-width field encoding, containing complete unmasked 9-digit Social security numbers (SSN), full legal names (first, middle initial, last), dates of birth, dates of death, and state issuance jurisdiction codes.
While portions of the Death Master File have historically been shared with certified financial institutions for fraud mitigation, its unrestricted dissemination in cybercrime environments enables synthetic identity construction, ghosting identity theft, fraudulent tax refund filings, and posthumous credit abuse.
Verification and editorial method
LeakData compares the incident name, date, affected-record count, and exposed data types with accessible sources. Unverified fields are not presented as facts, and records are updated when new evidence becomes available.
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