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Regulator-posted notice

Breach notice filed by Health Care Service Corporation (August 2023)

Organization named: Health Care Service Corporation 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 Office for Civil Rights breach portal with a submission date of Aug. 21, 2023.

Organization as reported
Health Care Service Corporation, IL
Entity type as reported
Health Plan
Category as reported
Hacking/IT Incident
Location of information as reported
Network Server
Submission date
Aug. 21, 2023
Observed by BreachRecords
2026-10-18 16:15 UTC (revision 10501, row:1640)
Archived copy
Held in the private archive (provenance)

The covered entity (CE), Health Care Service Corporation, reported that its business associate (BA) experienced a cyber-attack that compromised the protected health information (PHI) of 220,913 individuals. The PHI involved included names, addresses, email addresses, phone numbers, dates of birth, Social Security numbers, claims and financial information, and other treatment information. The CE notified HHS, affected individuals, and the media. OCR provided technical assistance regarding the HIPAA Privacy Rule.

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

Figures, per source

  • 220,913 individuals affected (total reported), according to the HHS Office for Civil Rights breach portal, source date Aug. 21, 2023, 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 (HHS Office for Civil Rights breach portal)
  • Observed by BreachRecords (revision 10501)
  • Approved by a reviewer

Organizations linked by a reviewer

  • Health Care Service Corporation 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, retrieved from HHS Office for Civil Rights breach portal, 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.

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