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47 disclosed this week · 26,367 on record

Mount St. Mary's Hospital

Disclosed Jul 30, 20216,538 affectedConfirmed

Official notice

The covered entity (CE), Mount St. Mary’s Hospital, reported that its business associate experienced a ransomware attack that affected the electronic protected health information (ePHI) of approximately 6,538 individuals. The ePHI involved included names, dates of birth, and treatment information. The CE notified HHS, affected individuals, and the media.

What is known

People affected6,538 (as reported to HHS)
DisclosedJul 30, 2021
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
Added2026-09-25
First recordedby backfillSource

First seen 2026-09-25 (HHS archive), confirmed by HHS OCR. Record counts are as reported. Not legal advice.

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