- State
- CA
- Covered entity type
- Health Plan
- Individuals affected
- 1,506
- Business associate present
- Yes
- 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
The covered entity (CE), Blue Shield California, reported that a subcontractor of its business associate (BA) was the victim of a ransomware attack affecting the protected health information (PHI) of approximately 1,506 individuals. The PHI involved included names, subscriber identification numbers, diagnoses, medications, addresses, dates of birth, and treatment information. The CE notified HHS, affected individuals, the media, and posted substitute notice on its website. In response to the breach, the CE provided complimentary credit monitoring and identity theft protection services and implemented additional technical safeguards.
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.