Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

American Addiction Centers

Disclosed Aug 7, 2026327,754 affectedConfirmed

Official notice

What is known

People affected327,754 (as reported to HHS)
DisclosedAug 7, 2026
DiscoveredJun 5, 2026
HappenedMay 12, 2026
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Official noticeoag.ca.gov
California Attorney General breach notice: American Addiction Centers
Official noticeatg.wa.gov
Washington Attorney General breach notice: American Addiction Centers
Official noticejustice.oregon.gov
Oregon DOJ breach notice: American Addiction Centers
Official noticeocrportal.hhs.gov
HHS OCR breach report: American Addiction Centers (Business Associate, TN)

Notices filed

Residents of CAAug 7
California AGCount not stated
Residents of WAAug 7
Washington AG1,155 people
TotalAug 7
HHS OCR327,754 people
Residents of ORSep 3
Oregon DOJ1 person

Other breaches at American Addiction Centers

Hacking breachHacking exposed names and health records. Reported to the California AG.422K affectedHealthcareUSNov 25, 2024Breach, details not statedBreach notice filed with the Indiana AG, details not stated.328 affectedHealthcareUSNov 9, 2020
History of this record
data_types2026-10-02
[] to ["names","health"]by dailySource
records_basis2026-10-02
empty to hhsby dailySource
records2026-10-02
empty to 327754by dailySource
sector2026-09-25
other to healthby backfillSource
attack2026-09-25
unknown to hackingby backfillSource
discovered2026-09-25
empty to 2026-06-05by 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 American Addiction Centers