University of Michigan/Michigan Medicine
Disclosed Mar 3, 202233,857 affectedConfirmed
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.
What is known
| People affected | 33,857 (as reported to HHS) |
|---|---|
| Disclosed | Mar 3, 2022 |
| Attack | Hacking |
| Data exposed | NamesHealth |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
Notices filed
Other breaches at University of Michigan/Michigan Medicine
History of this record
First seen 2026-09-25 (HHS archive), confirmed by HHS OCR. Record counts are as reported. Not legal advice.