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University of Michigan/Michigan Medicine

ArchivedSubmitted 10/25/2022
State
MI
Covered entity type
Healthcare Provider
Individuals affected
33,857
Business associate present
No
Type of breach
Hacking/IT Incident
Location of breached information
Email
First seen by InfoSec Signals
9/23/2026
Last seen in OCR export
9/23/2026

OCR description

The covered entity (CE), University of Michigan/Michigan Medicine, reported that several employees were the subjects of an email phishing scheme that affected the protected health information (PHI) of 33,857 individuals. The PHI involved included names, addresses, dates of birth, Social Security Numbers, health insurance and claims information, diagnoses, lab results, medications, and other treatment information. The CE notified HHS, the affected individuals, the media, and provided substitute notice. In its mitigation efforts, the CE implemented additional administrative, technical, and security safeguards to better protect its PHI. Staff were retrained on email security precautions.

Change history

  • 9/23/2026Added to OCR's archive list

Source: U.S. Department of Health and Human Services, Office for Civil Rights, Breach Portal. Records are reproduced as published; entity names and figures are OCR's.