- State
- NY
- Covered entity type
- Healthcare Provider
- Individuals affected
- 12,000
- Business associate present
- No
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- First seen by InfoSec Signals
- 9/23/2026
- Last seen in OCR export
- 9/23/2026
OCR description
Seneca Nation Health System, the covered entity (CE), reported that it was the victim of a cybersecurity incident that affected the protected health information (PHI) of 12,000 individuals. The PHI involved included names, addresses, dates of birth, drivers’ license and Social Security numbers, claims and financial information, diagnoses/conditions, lab results, medication information, and other treatment information. The CE notified HHS, the affected individuals, and the media. In its mitigation efforts, the CE implemented additional administrative, technical, and security safeguards to better protect its sensitive data and retrained staff.
Change history
- 9/23/2026Added to OCR's archive list
Source: U.S. Department of Health and Human Services, Office for Civil Rights, Breach Portal. Records are reproduced as published; entity names and figures are OCR's.