- State
- WI
- Covered entity type
- Healthcare Provider
- Individuals affected
- 68,707
- Business associate present
- Yes
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- First seen by InfoSec Signals
- Sep 23, 2026
- Last seen in OCR export
- Oct 25, 2026
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 complimentary telephone number for questions or concerns. The CE also provided credit monitoring services. In response to the breach, the BA implemented additional technical safeguards to better protect sensitive data.
Change history
- Sep 23, 2026Added to OCR's archive list
Source: HHS OCR Breach Portal, U.S. Department of Health and Human Services, Office for Civil Rights about this source
Records are reproduced as published; entity names and figures are OCR's.