Every public data breach

44 disclosed this week · 26,355 on record

Union Health System

Disclosed Apr 21, 2025262,831 affectedConfirmed

Official notice

The covered entity (CE), Union Health System, reported that it’s business associate (BA) experienced a hacking attack that compromised the protected health information (PHI) of 262,831 individuals. The PHI involved included names, addresses, drivers’ license and Social Security numbers, diagnoses/conditions, lab results and medications. The CE notified HHS, the affected individuals, the media, and provided substitute notice. In response to the breach, the CE provided complimentary credit monitoring services and implemented additional administrative, technical, and security safeguards to better protect PHI.

What is known

People affected262,831 (as reported to HHS)
DisclosedApr 21, 2025
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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