Arthur J. Gallagher

Disclosed Nov 26, 20196 years ago3,330 affectedConfirmed

Official notice

What is known

People affected	3,330 (as reported by the organization)
Disclosed	Nov 26, 2019
Happened	Mar 15, 2019
Attack	Not stated
Data exposed	Names, Social Security numbers
Sector	Tech · US
Status	Confirmed

Sources

Source	Kind
California Attorney General breach notice: Arthur J. Gallagheroag.ca.gov · Official notice	Official notice
Maine Attorney General breach notice archive: Arthur J. Gallaghermaine.gov · Official notice	Official notice

Notices filed

Where	Filed	People
Maine AGresidents of ME	Nov 26, 2019	37
California AGresidents of CA	Dec 6, 2019

Other breaches at Arthur J. Gallagher

Breach	Disclosed	Attack	Sector	Status	Affected
Disclosed Jun 30, 2021Jun 30, 20215 years agoRansomware	Jun 30, 20215 years ago	Ransomware	Tech	Confirmed	90K

History of this record

2026-09-25 · data_types: [] to ["names","ssn"] · backfill source
2026-09-25 · records_basis: empty to organization · backfill source
2026-09-25 · records: empty to 3330 · backfill source
2026-09-25 · disclosed: 2019-12-06 to 2019-11-26 · backfill source
2026-09-25 · added · backfill source

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

Everything about Arthur J. Gallagher

New breaches by email

Wednesdays, only in weeks with newly disclosed breaches, the largest first.