Hanover INsurance

Disclosed Mar 26, 20188 years ago15,422 affectedConfirmed

Official notice

What is known

People affected	15,422 (as reported by the organization)
Disclosed	Mar 26, 2018
Discovered	Aug 30, 2018
Happened	Mar 16, 2018
Attack	Not stated
Data exposed	Not stated
Sector	Insurance · US
Status	Confirmed

Sources

Source	Kind
Oregon DOJ breach notice: Hanover INsurancejustice.oregon.gov · Official notice	Official notice
Indiana Attorney General 2018 data breach report: Hanover Insurancein.gov · Official notice	Official notice

Notices filed

Where	Filed	People
Indiana AGresidents of IN	Mar 26, 2018	174
Oregon DOJresidents of OR	Nov 19, 2018	460

Other breaches at Hanover INsurance

Breach	Disclosed	Attack	Sector	Status	Affected
Disclosed Feb 26, 2021Feb 26, 20215 years ago	Feb 26, 20215 years ago	Not stated	Insurance	Confirmed	18K

History of this record

2026-09-25 · records_basis: empty to organization · backfill source
2026-09-25 · records: empty to 15422 · backfill source
2026-09-25 · disclosed: 2018-11-19 to 2018-03-26 · backfill source
2026-09-25 · added · backfill source

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

Everything about Hanover INsurance

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