HHS OCR report · 2021
Advocate Aurora Health data breach
OCR report facts
- Covered entity
- Advocate Aurora Health
- Entity type
- Healthcare Provider
- State
- Wisconsin
- Individuals affected
- 68,707
- Submission date
- Jul 16, 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), Advocate Aurora Health, reported that its business associate (BA) experienced a ransomware attack that affected the electronic protected health information (ePHI) of 68,707 individuals. The ePHI involved included names, addresses, Social Security numbers, dates of birth, drivers’ license numbers, diagnoses/conditions, lab results, medications prescribed, and other treatment information. The CE notified HHS, affected individuals, the media, and provided a complimenta...
Text as published on the HHS OCR breach portal.
Other reports by Advocate Aurora Health
| Covered entity | State | Entity type | Individuals | Submitted | Type of breach | Status |
|---|---|---|---|---|---|---|
| Advocate Aurora Health | WI | Healthcare Provider | 3,000,000 | Oct 14, 2022 | Unauthorized Access/Disclosure | Archive (closed) |
| Advocate Aurora Health | WI | Healthcare Provider | 1,729 | Dec 28, 2021 | Loss | Archive (closed) |
| Advocate Aurora Health | WI | Healthcare Provider | 2,979 | Sep 4, 2020 | Unauthorized Access/Disclosure | Archive (closed) |
| Advocate Aurora Health | WI | Healthcare Provider | 1,907 | Aug 14, 2020 | Unauthorized Access/Disclosure | Archive (closed) |
| Advocate Aurora Health | WI | Healthcare Provider | 27,137 | Apr 16, 2020 | Hacking/IT Incident | Archive (closed) |
Frequently asked questions
How many people were affected by the Advocate Aurora Health data breach?
The report to HHS OCR lists 68,707 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Jul 16, 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 Advocate Aurora Health 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 Advocate Aurora Health.