Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

Milliman

Disclosed Aug 14, 202349,438 affectedConfirmed

Official notice

What is known

People affected49,438 (as reported by the organization)
DisclosedAug 14, 2023
DiscoveredMay 31, 2023
HappenedMay 29, 2023
AttackHacking
Data exposedNot stated
SectorOther · US
StatusConfirmed

Sources

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

Notices filed

Residents of CAAug 14, 2023
California AGCount not stated
Residents of WAAug 14, 2023
Washington AG2,879 people
Residents of ORAug 14, 2023
Oregon DOJ44,415 people
Residents of INAug 14, 2023
Indiana AG650 people

Other breaches at Milliman

Breach, details not statedBreach notice filed with the Indiana AG, details not stated.570 affectedUSAug 6, 2020
History of this record
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 49438by backfillSource
attack2026-09-25
unknown to hackingby backfillSource
discovered2026-09-25
empty to 2023-05-31by 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 Milliman