Regulator-posted notice

Breach notice filed by University of Wisconsin Hospitals and Clinics Authority (June 2021)

Organization named: University of Wisconsin Hospitals and Clinics Authority Provisional: identity as filed, not yet matched to the directory
Type as the source lists it: Hacking/IT Incident

What the sources say

HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals) Primary notice

Posted on the HHS Office for Civil Rights breach portal with a submission date of June 18, 2021.

Organization as reported: University of Wisconsin Hospitals and Clinics Authority, WI
Entity type as reported: Healthcare Provider
Category as reported: Hacking/IT Incident
Location of information as reported: Electronic Medical Record, Other
Submission date: June 18, 2021
Observed by BreachRecords: 2026-10-18 16:15 UTC (revision 12070, row:3209)
Archived copy: Held in the private archive (provenance)

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.
The source's own words, from the revision above.

Figures, per source

4,563 individuals affected (total reported), according to the HHS Office for Civil Rights breach portal, source date June 18, 2021, revision observed 2026-10-18.

Each figure is one source's figure with the basis that source gave. Figures from different sources are shown side by side and are not added, averaged or chosen between.

Timeline

Source dates are the dates the sources give. Observation dates are when BreachRecords recorded each revision.

2021-06-18Submission date (HHS Office for Civil Rights breach portal)
2026-10-18Observed by BreachRecords (revision 12070)
2026-10-19Approved by a reviewer

Organizations linked by a reviewer

University of Wisconsin Hospitals and Clinics Authority Named as the covered entity Provisional: identity as filed, not yet matched to the directory Linked 2026-10-19, method provisional.

Archived evidence

3dbc27dd5742e041cc1e7fe18cc669e2901fbd3b86b7007ed27948ff4d406e1f
text/csv, 5,530,996 bytes, retrieved from HHS Office for Civil Rights breach portal, 2026-10-18 16:15 UTC. Archived privately · Provenance · Source page

Records reflect source filings as of the dates shown. BreachRecords is not a regulator.

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