- State
- CT
- Covered entity type
- Healthcare Provider
- Individuals affected
- 5,556,702
- Business associate present
- No
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- First seen by InfoSec Signals
- Sep 23, 2026
- Last seen in OCR export
- Oct 25, 2026
OCR description
The covered entity (CE), Yale New Haven Health System, reported that it experienced a hacking incident that affected the protected health information (PHI) of 5,556,702 individuals. The PHI involved included names, dates of birth, addresses, and Social Security numbers. The CE notified HHS, affected individuals, the media, and implemented substitute notice. In response to the breach, the CE implemented additional administrative, technical, and security safeguards.
Change history
- Sep 23, 2026Added to OCR's archive list
Source: HHS OCR Breach Portal, U.S. Department of Health and Human Services, Office for Civil Rights about this source
Records are reproduced as published; entity names and figures are OCR's.