Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

Group Health Cooperative

Disclosed Sep 23, 2016Confirmed

Official notice

What is known

People affectedNot stated in the sources we have
DisclosedSep 23, 2016
DiscoveredSep 6, 2016
HappenedAug 31, 2016
AttackLost or stolen device
Data exposedNot stated
SectorHealthcare · US
StatusConfirmed

Sources

Official noticeatg.wa.gov
Washington Attorney General breach notice: Group Health Cooperative

Notices filed

Residents of WASep 23, 2016
Washington AG651 people

Other breaches at Group Health Cooperative

Breach, details not statedExposed names and health records. Reported to the HHS archive.1,015 affectedHealthcareUSOct 3, 2013
History of this record
Added2026-09-25
First recordedby backfillSource

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

Everything about Group Health Cooperative