Acadia Montana Treatment Center
Disclosed May 17, 20197 years ago14,794 affectedConfirmed
Acadia Montana Treatment Center, the covered entity (CE), reported that an employee’s computer was infected with malware that affected the electronic protected health information (ePHI) of 14,794 individuals. The ePHI involved included names, addresses, birthdates, drivers’ license numbers, diagnoses/conditions, lab results, medications prescribed, and other treatment information. The CE notified HHS, affected individuals, and the media. In its mitigation efforts, the CE retrained its workforce, implemented additional technical safeguards, and sanctioned the workforce member responsible for the breach.
What is known
| People affected | 14,794 (as reported to HHS) |
|---|---|
| Disclosed | May 17, 2019 |
| Attack | Hacking |
| Data exposed | Names, Health |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| HHS OCR breach report (archive, resolved): Acadia Montana Treatment Center (Healthcare Provider, MT)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| HHS archivetotal | May 17, 2019 | 14,794 |
History of this record
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (HHS archive), confirmed by HHS OCR. Record counts are as reported. Not legal advice.