Every public data breach

Disclosed this week53On record26,385

53 disclosed this week · 26,385 on record

Advocate Aurora Health

Disclosed Jul 16, 20213,000,000 affectedConfirmed

Official notice

The covered entity (CE), Advocate Aurora Health, reported that web tracking technology transferred the protected health information (PHI) of 3,000,000 individuals to unauthorized recipients. OCR has consolidated this breach report into an existing compliance review of the CE.

What is known

People affected3,000,000 (as reported to HHS)
DisclosedJul 16, 2021
AttackInsider
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Official noticeocrportal.hhs.gov
HHS OCR breach report (archive, resolved): Advocate Aurora Health (Healthcare Provider, WI)

Notices filed

TotalJul 16, 2021
HHS archive68,707 people
TotalDec 28, 2021
HHS archive1,729 people
TotalOct 14, 2022
HHS archive3,000,000 people

Other breaches at Advocate Aurora Health

Insider breachInsider exposed names, Social Security numbers, payment cards, financial details and health records. Reported to the HHS archive.176K affectedHealthcareUSFeb 19, 2020
History of this record
disclosed2026-09-25
2021-12-28 to 2021-07-16by backfillSource
disclosed2026-09-25
2022-10-14 to 2021-12-28by backfillSource
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.

Everything about Advocate Aurora Health