HHS OCR report ยท 2021
Blue Cross of California data breach
OCR report facts
- Covered entity
- Blue Cross of California
- Entity type
- Health Plan
- State
- Indiana
- Individuals affected
- 672
- Submission date
- Oct 27, 2021
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- Yes
- Status
- Archive (closed)
OCR description
The covered entity (CE), Blue Cross of California, reported that its business associate (BA) experienced a ransomware attack that affected the electronic protected health information (ePHI) of 672 individuals. The ePHI involved included names, gender, email addresses, phone numbers, home addresses, Social Security numbers, health insurance information, and other treatment information.
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Blue Cross of California data breach?
The report to HHS OCR lists 672 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Oct 27, 2021.
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 Blue Cross of California 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 Blue Cross of California.