HHS OCR report ยท 2021
Health Care Service Corp data breach
OCR report facts
- Covered entity
- Health Care Service Corp
- Entity type
- Health Plan
- State
- Illinois
- Individuals affected
- 543
- Submission date
- Jun 15, 2021
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- Yes
- Status
- Archive (closed)
OCR description
Health Care Service Corporation, the covered entity (CE), reported that a vendor of its business associate (BA) experienced a cyber-attack that compromised the protected health information (PHI) of 543 individuals. The PHI involved included names, birthdates, diagnoses, claims information, and other treatment information. The CE notified HHS, affected individuals, the media, and posted substitute notice on its website. In its mitigation efforts, the CE and BA implemented additional administra...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Health Care Service Corp data breach?
The report to HHS OCR lists 543 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Jun 15, 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 Health Care Service Corp 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 Health Care Service Corp.