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44 disclosed this week · 26,355 on record

American Addiction Centers

Disclosed Nov 25, 2024422,424 affectedConfirmed

Official notice

The business associate (BA), American Addiction Centers, Inc., reported that its business associate (BA) experienced a cyber-attack that affected the protected health information (PHI) of 410,747 individuals. The PHI involved included clinical, demographic, and financial information. The BA notified the affected covered entities, individuals, the media, the HHS Secretary, and substitute notice was published on each covered entity’s website. In response to the breach, the BA provided complimentary credit monitoring services to the affected individuals, implemented additional administrative, technical, and security safeguards, and retrained workforce members to better protect PHI.

What is known

People affected422,424 (as reported by the organization)
DisclosedNov 25, 2024
DiscoveredSep 26, 2024
HappenedSep 23, 2024
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

Other breaches at American Addiction Centers

History of this record
data_types2026-09-25
[] to ["names","health"]by backfillSource
disclosed2026-09-25
2024-12-13 to 2024-11-25by backfillSource
summary2026-09-25
empty to The business associate (BA), American Addiction Centers, Inc., reported that its business associate (BA) experienced a cyber-attack that affected the protected health information (PHI) of 410,747 individuals. The PHI involved included cliniby backfillSource
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 422424by backfillSource
disclosed2026-09-25
2024-12-20 to 2024-12-13by backfillSource
sector2026-09-25
other to healthby backfillSource
attack2026-09-25
unknown to hackingby backfillSource
disclosed2026-09-25
2024-12-23 to 2024-12-20by backfillSource
discovered2026-09-25
empty to 2024-09-26by 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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