University of Wisconsin Hospitals and Clinics Authority
Disclosed Jun 18, 20215 years ago4,563 affectedConfirmed
The covered entity (CE), University of Wisconsin Hospitals and Clinics Authority, reported that it experienced a cyber-attack that affected the protected health information (PHI) of 4,563 individuals. The PHI included names, dates of birth, addresses, claims information, diagnoses/conditions, lab results, and medications. The CE notified HHS, the affected individuals, and the media. The CE implemented new policies and security awareness training as well as additional administrative, technical, and security safeguards.
What is known
| People affected | 4,563 (as reported to HHS) |
|---|---|
| Disclosed | Jun 18, 2021 |
| Attack | Hacking |
| Data exposed | Names, Health |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| HHS OCR breach report (archive, resolved): University of Wisconsin Hospitals and Clinics Authority (Healthcare Provider, WI)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| HHS archivetotal | Jun 18, 2021 | 4,563 |
Other breaches at University of Wisconsin Hospitals and Clinics Authority
| Breach | Affected | ||||
|---|---|---|---|---|---|
| Disclosed Mar 5, 2024Mar 5, 20242 years agoHacking | Mar 5, 20242 years ago | Hacking | Healthcare | Confirmed | 86K |
| Disclosed Sep 30, 2016Sep 30, 20169 years agoInsider | Sep 30, 20169 years ago | Insider | Healthcare | Confirmed | 6,923 |
History of this record
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (HHS archive), confirmed by HHS OCR. Record counts are as reported. Not legal advice.
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