Medical College of Wisconsin
Disclosed Sep 2, 20169,500 affectedConfirmed
The Medical College of Wisconsin, the covered entity (CE), reported that several employees were the victims of an email phishing attack. The email accounts contained the protected health information (PHI) of 9,500 individuals. The PHI involved included names, dates of birth, addresses, Social Security numbers, medical record numbers, health insurance information, financial information, and treatment information. The CE notified HHS, affected individuals, and the media. As a result of the breach, the CE immediately implemented administrative and technical safeguards to better protect its data and retrained its staff. OCR obtained assurances that the CE implemented the aforementioned corrective actions.
What is known
| People affected | 9,500 (as reported to HHS) |
|---|---|
| Disclosed | Sep 2, 2016 |
| Discovered | Sep 20, 2017 |
| Happened | Jul 21, 2017 |
| Attack | Hacking |
| Data exposed | NamesHealth |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
Notices filed
Other breaches at Medical College of Wisconsin
History of this record
First seen 2026-09-25 (Oregon DOJ), confirmed by Oregon DOJ. Record counts are as reported. Not legal advice.