Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

Highmark Health

Disclosed Feb 10, 2023293,039 affectedConfirmed

Official notice

What is known

People affected293,039 (as reported by the organization)
DisclosedFeb 10, 2023
DiscoveredDec 15, 2022
HappenedDec 13, 2022
AttackNot stated
Data exposedNot stated
SectorTech · US
StatusConfirmed

Sources

Official noticejustice.oregon.gov
Oregon DOJ breach notice: Highmark Health
Official noticein.gov
Indiana Attorney General 2023 data breach report: Highmark Health

Notices filed

Residents of INFeb 10, 2023
Indiana AG28,888 people
Residents of ORJul 7, 2023
Oregon DOJCount not stated
History of this record
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 293039by backfillSource
disclosed2026-09-25
2023-07-07 to 2023-02-10by backfillSource
Added2026-09-25
First recordedby backfillSource

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

Everything about Highmark Health