HHS OCR report ยท 2023
One Brooklyn Health System data breach
OCR report facts
- Covered entity
- One Brooklyn Health System
- Entity type
- Healthcare Provider
- State
- New York
- Individuals affected
- 211,347
- Submission date
- Jan 18, 2023
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- No
- Status
- Archive (closed)
OCR description
One Brooklyn Health (the covered entity (CE), reported that it experienced a hacking attack that compromised the protected health information (PHI) of 211,347 individuals. The PHI involved included names, dates of birth, addresses, diagnoses, medical records numbers, medications, and health insurance information. The CE notified HHS, impacted individuals, and the media. In its mitigation efforts, the CE implemented additional administrative, technical, and security safeguards to better protec...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the One Brooklyn Health System data breach?
The report to HHS OCR lists 211,347 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Jan 18, 2023.
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 One Brooklyn 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 One Brooklyn Health System.