Skip to content

Munson Healthcare

Disclosed Feb 26, 20206 years ago75,202 affectedConfirmed

Official notice

The covered entity (CE), Munson Healthcare, reported that several employees were the subjects of an email phishing incident that affected the protected health information (PHI) of 75,202 individuals. The PHI involved included names, dates of birth, health insurance information, medical record numbers, prescription information, diagnoses, Social Security numbers, financial information, drivers’ license numbers, and other treatment information. The CE notified HHS, affected individuals, the media, and posted substitute notice on its website. In its mitigation efforts, the CE provided complimentary credit monitoring services and established a call center for questions or concerns. In addition, the CE implemented additional administrative and technical safeguards to better protect its PHI. Staff were retrained on email security.

What is known

People affected75,202 (as reported to HHS)
DisclosedFeb 26, 2020
AttackHacking
Data exposedNames, Health
SectorHealthcare · US
StatusConfirmed

Sources

Source
HHS OCR breach report (archive, resolved): Munson Healthcare (Healthcare Provider, MI)ocrportal.hhs.gov · Official notice

Notices filed

WhereFiledPeople
HHS archivetotalFeb 26, 202075,202

Other breaches at Munson Healthcare

BreachAffected
Disclosed Sep 17, 2025Sep 17, 20251 year agoInsider1,186
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.

Everything about Munson Healthcare

New breaches by email

Wednesdays, only in weeks with newly disclosed breaches, the largest first.

Double opt-in. Unsubscribe any time.