Montana Department of Public Health and Human Services
Disclosed Jul 7, 201412 years ago1,062,509 affectedConfirmed
Unpatched server hacked for nine months exposes data of 1 million Montanans
An undetected, unpatched application vulnerability let an intruder misuse a state health department server for about nine months, exposing demographic, clinical and financial data of over 1 million people.
What is known
| People affected | 1,062,509 (as reported by the organization) |
|---|---|
| Disclosed | Jul 7, 2014 |
| Attack | Hacking |
| Data exposed | Names, Addresses, Dates of birth, Social Security numbers, Health, Financial |
| Sector | Government · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| HHS Office for Civil Rights breach portal (archive): Breaches Affecting 500 or More Individualsocrportal.hhs.gov · Regulator | Regulator |
Notices filed
| Where | Filed | People |
|---|---|---|
| Researchtotal | Jul 7, 2014 | 1,062,509 |
| HHS archivetotal | Jul 7, 2014 | 1,062,509 |
History of this record
- 2026-09-25 · added · seed source
First seen 2026-09-25 (Research), confirmed by Research. Record counts are as reported. Not legal advice.
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