Every public data breach

Disclosed this week47On record26,367

47 disclosed this week · 26,367 on record

MCG Health

Disclosed Jun 10, 20221,100,000 affectedConfirmed

Official notice

What is known

People affected1,100,000 (as reported by the organization)
DisclosedJun 10, 2022
HappenedFeb 25, 2020
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Official noticeoag.ca.gov
California Attorney General breach notice: MCG Health
Official noticein.gov
Indiana Attorney General 2022 data breach report: MCG Health
Official noticeocrportal.hhs.gov
HHS OCR breach report (archive, resolved): MCG Health (Business Associate, WA)

Notices filed

Residents of INJun 10, 2022
Indiana AG59,598 people
TotalJun 10, 2022
HHS archive793,283 people
Residents of CAJun 28, 2022
California AGCount not stated
History of this record
attack2026-09-25
unknown to hackingby backfillSource
data_types2026-09-25
[] to ["names","health"]by backfillSource
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 1100000by backfillSource
disclosed2026-09-25
2022-06-28 to 2022-06-10by backfillSource
occurred2026-09-25
empty to 2020-02-25by 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.

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