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47 disclosed this week · 26,367 on record

UW Medicine

Disclosed Feb 20, 2019973,024 affectedConfirmed

Official notice

The covered entity (CE), UW Medicine, reported that a configuration error in its system resulted in the protected health information (PHI) of 973,024 individuals becoming accessible on the internet. The PHI involved included names and medical record numbers. The CE notified HHS, affected individuals, the media, and provided substitute notice. In response to the breach, the CE implemented additional administrative and technical safeguards and retrained workforce members on methods to better protect its PHI.

What is known

People affected973,024 (as reported to HHS)
DisclosedFeb 20, 2019
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

Other breaches at UW Medicine

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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