Every public data breach

44 disclosed this week · 26,355 on record

Harris Center for Mental Health and IDD

Disclosed Aug 17, 2023599,367 affectedConfirmed

Official notice

The covered entity (CE), The Harris Center for Mental Health and IDD, reported that it was the subject of a ransomware attack that affected the protected health information (PHI) of 545,001 individuals. The PHI involved included names, Social Security numbers, addresses, drivers’ license numbers, dates of birth, claims and financial information, diagnoses, medications, phone numbers, email addresses, health insurance information, and other treatment information. The CE notified HHS, the affected individuals, the media, and provided substitute notice. In response to the breach, the CE provided complimentary credit monitoring services and implemented additional administrative, technical, and security safeguards to better protect its PHI.

What is known

People affected599,367 (as reported to HHS)
DisclosedAug 17, 2023
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
records2026-09-25
545001 to 599367by backfillSource
disclosed2026-09-25
2024-01-05 to 2023-08-17by backfillSource
attack2026-09-25
unknown to hackingby backfillSource
data_types2026-09-25
[] to ["names","health"]by backfillSource
records_basis2026-09-25
empty to hhsby backfillSource
records2026-09-25
empty to 545001by backfillSource
disclosed2026-09-25
2024-04-12 to 2024-01-05by backfillSource
summary2026-09-25
empty to The covered entity (CE), The Harris Center for Mental Health and IDD, reported that it was the subject of a ransomware attack that affected the protected health information (PHI) of 545,001 individuals. The PHI involved included names, Sociby backfillSource
Added2026-09-25
First recordedby backfillSource

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

Everything about Harris Center for Mental Health and IDD