HHS OCR report · 2024
Seneca Nation Health System data breach
OCR report facts
- Covered entity
- Seneca Nation Health System
- Entity type
- Healthcare Provider
- State
- New York
- Individuals affected
- 16,879
- Submission date
- Sep 6, 2024
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The covered entity (CE), Seneca Nation Health System, reported that it was the victim of a cybersecurity incident that affected the protected health information (PHI) of 16,879 individuals. The PHI involved included names, dates of birth, Social Security numbers, addresses, drivers’ license numbers, financial and claims information, diagnoses/conditions, lab results, medications, and treatment information. The CE notified HHS, the affected individuals, and the media. In response to the breach...
Text as published on the HHS OCR breach portal.
Other reports by Seneca Nation Health System
| Covered entity | State | Entity type | Individuals | Submitted | Type of breach | Status |
|---|---|---|---|---|---|---|
| Seneca Nation Health System | NY | Healthcare Provider | 12,000 | Feb 8, 2022 | Hacking/IT Incident | Archive (closed) |
Frequently asked questions
How many people were affected by the Seneca Nation Health System data breach?
The report to HHS OCR lists 16,879 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Sep 6, 2024.
What type of breach was it?
The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: Network Server.
Is the investigation still open?
No. The report is in the OCR portal archive, which holds reports where OCR has closed its review.
Is a breach notice letter from Seneca Nation Health System legitimate?
This site cannot verify letters. Check the sender against the organisation's official website and the HHS OCR breach portal, and avoid calling numbers or clicking links only listed in an unexpected message. See our guide on what to do after a data breach notice.
Source: HHS OCR Breach Portal, OCR export October 2026. Network USA is not affiliated with HHS or Seneca Nation Health System.