Arthur J. Gallagher

Disclosed Jun 30, 202190,240 affectedConfirmed

What is known

People affected	90,240 (as reported by the organization)
Disclosed	Jun 30, 2021
Discovered	Sep 26, 2020
Happened	Jul 2, 2020
Attack	Ransomware
Data exposed	NamesHealthInsuranceCredentials and tokens
Sector	Tech · US
Status	Confirmed

Sources

Official noticeoag.ca.gov

California Attorney General breach notice: Arthur J. Gallagher

Official noticeatg.wa.gov

Washington Attorney General breach notice: Arthur J. Gallagher

Official noticeattorneygeneral.delaware.gov

Notice letter filed with the Delaware DOJ: Arthur J. Gallagher

Official noticejustice.oregon.gov

Oregon DOJ breach notice: Arthur J. Gallagher

Official noticein.gov

Indiana Attorney General 2021 data breach report: Arthur J. Gallagher

Notices filed

Residents of CAJun 30, 2021

California AGCount not stated

Residents of DEJun 30, 2021

Delaware DOJ935 people

Residents of INJun 30, 2021

Indiana AG26,307 people

Residents of ORJul 8, 2021

Oregon DOJ90,240 people

Residents of WAJul 13, 2021

Washington AG72,378 people

Other breaches at Arthur J. Gallagher

Breach, details not statedExposed names and Social Security numbers. Reported to the California AG.3,330 affectedTechUSNov 26, 2019

History of this record

source2026-09-25

empty to https://www.in.gov/attorneygeneral/consumer-protection-division/id-theft-prevention/files/Data-Breach-Year-to-date-Report-2021-1.pdfby backfillSource

data_types2026-09-25

[] to ["names","health","insurance","credentials"]by backfillSource

records_basis2026-09-25

empty to organizationby backfillSource

records2026-09-25

empty to 90240by backfillSource

attack2026-09-25

unknown to ransomwareby backfillSource

discovered2026-09-25

empty to 2020-09-26by backfillSource

Added2026-09-25

First recordedby backfillSource

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

Everything about Arthur J. Gallagher