Cook County Health and Hospitals System

Disclosed Aug 20, 201016 years ago7,081 affectedConfirmed

Official notice

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What is known

People affected	7,081 (as reported to HHS)
Disclosed	Aug 20, 2010
Attack	Lost or stolen device
Data exposed	Names, Health
Sector	Healthcare · US
Status	Confirmed

Sources

Source	Kind
HHS OCR breach report (archive, resolved): Cook County Health & Hospitals System (Healthcare Provider, IL)ocrportal.hhs.gov · Official notice	Official notice

Notices filed

Where	Filed	People
HHS archivetotal	Aug 20, 2010	7,081
HHS archivetotal	Dec 17, 2010	556

Other breaches at Cook County Health and Hospitals System

Breach	Disclosed	Attack	Sector	Status	Affected
Disclosed Sep 24, 2023Sep 24, 20233 years agoHacking	Sep 24, 20233 years ago	Hacking	Healthcare	Confirmed	1.2M
Disclosed Oct 27, 2017Oct 27, 20178 years agoInsider	Oct 27, 20178 years ago	Insider	Healthcare	Confirmed	727
Disclosed Jan 11, 2014Jan 11, 201412 years agoHacking	Jan 11, 201412 years ago	Hacking	Healthcare	Confirmed	23K

History of this record

2026-09-25 · records: 556 to 7081 · backfill source
2026-09-25 · disclosed: 2010-12-17 to 2010-08-20 · backfill source
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 Cook County Health and Hospitals System

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