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Regulator-posted notice

Breach notice filed by Blue Cross of California (October 2021)

Organization named: Blue Cross of California Provisional: identity as filed, not yet matched to the directory
Type as the source lists it: Hacking/IT Incident

What the sources say

HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals) Primary notice

Posted on the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals) with a submission date of Oct. 27, 2021.

Organization as reported
Blue Cross of California, IN
Entity type as reported
Health Plan
Category as reported
Hacking/IT Incident
Location of information as reported
Network Server
Submission date
Oct. 27, 2021
Observed by BreachRecords
2026-10-18 16:15 UTC (revision 11830, row:2969)
Archived copy
Held in the private archive (provenance)

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.

The source's own words, from the revision above.

Figures, per source

  • 672 individuals affected (total reported), as reported by the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals), source date Oct. 27, 2021, revision observed 2026-10-18.

Each figure is one source's figure with the basis that source gave. Figures from different sources are shown side by side and are not added, averaged or chosen between.

Timeline

Source dates are the dates the sources give. Observation dates are when BreachRecords recorded each revision.

  • Submission date at the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals)
  • Observed by BreachRecords (revision 11830)
  • Approved by a reviewer

Organizations linked by a reviewer

  • Blue Cross of California Named as the covered entity Provisional: identity as filed, not yet matched to the directory Linked 2026-10-19, method provisional.

Archived evidence

  • 3dbc27dd5742e041cc1e7fe18cc669e2901fbd3b86b7007ed27948ff4d406e1f
    text/csv, 5,530,996 bytes, from the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals), retrieved 2026-10-18 16:15 UTC. Archived privately · Provenance · Source page

Records reflect source filings as of the dates shown. BreachRecords is not a regulator.

Request a correction

A record that disagrees with its source, names the wrong organization or duplicates another is corrected after review. This form is about Breach notice filed by Blue Cross of California (October 2021). We acknowledge every request within two business days. We reply by email.

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