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University of Wisconsin Hospitals and Clinics Authority

Disclosed Mar 5, 20242 years ago85,902 affectedConfirmed

Official notice

The covered entity (CE), University of Wisconsin Hospitals and Clinics Authority, reported that an employee was the target of an email phishing scheme affecting the protected health information (PHI) of 85,902 individuals. The PHI involved included names, dates of birth, addresses, and diagnoses/conditions. The CE notified HHS, the affected individuals, and the media. In response to the breach, the CE implemented additional administrative, technical, and security safeguards and retrained staff on the requirement to protect and secure PHI.

What is known

People affected85,902 (as reported to HHS)
DisclosedMar 5, 2024
AttackHacking
Data exposedNames, Health
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

WhereFiledPeople
HHS archivetotalMar 5, 202485,902

Other breaches at University of Wisconsin Hospitals and Clinics Authority

BreachAffected
Disclosed Jun 18, 2021Jun 18, 20215 years agoHacking4,563
Disclosed Sep 30, 2016Sep 30, 20169 years agoInsider6,923
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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