Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

Unum Group

Disclosed Aug 3, 2023650,521 affectedConfirmed

Official notice

What is known

People affected650,521 (as reported by the organization)
DisclosedAug 3, 2023
DiscoveredJun 4, 2023
HappenedMay 31, 2023
AttackHacking
Data exposedNot stated
SectorFinance · US
StatusConfirmed

Sources

Official noticeoag.ca.gov
California Attorney General breach notice: Unum Group
Official noticeatg.wa.gov
Washington Attorney General breach notice: Unum Group
Official noticejustice.oregon.gov
Oregon DOJ breach notice: Unum Group
Official noticein.gov
Indiana Attorney General 2023 data breach report: Unum Group

Notices filed

Residents of INAug 3, 2023
Indiana AG9,667 people
Residents of WAAug 21, 2023
Washington AG4,186 people
Residents of ORSep 5, 2023
Oregon DOJCount not stated
Residents of CASep 19, 2023
California AGCount not stated

Other breaches at Unum Group

Hacking breachHacking exposed names, health records and insurance details. Reported to the Delaware DOJ.34K affectedFinanceUSJan 28, 2022Hacking breachHacking exposed names and health records. Reported to the HHS archive.532 affectedFinanceUSJan 24, 2019Breach, details not statedExposed names, health records and insurance details. Reported to the Delaware DOJ.50 affectedFinanceUSJan 10, 2014
History of this record
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 650521by backfillSource
disclosed2026-09-25
2023-08-21 to 2023-08-03by backfillSource
sector2026-09-25
other to financeby backfillSource
attack2026-09-25
unknown to hackingby backfillSource
disclosed2026-09-25
2023-09-19 to 2023-08-21by backfillSource
discovered2026-09-25
empty to 2023-06-04by 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 Unum Group