Harris Center for Mental Health and IDD
Disclosed Aug 17, 20233 years ago599,367 affectedConfirmed
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 affected | 599,367 (as reported to HHS) |
|---|---|
| Disclosed | Aug 17, 2023 |
| Attack | Hacking |
| Data exposed | Names, Health |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| Vermont Attorney General: 2024-04-12 The Harris Center for Mental Health and IDD Data Breach Notice to Consumersago.vermont.gov · Official notice | Official notice |
| HHS OCR breach report (archive, resolved): Harris Center for Mental Health and IDD (Healthcare Provider, TX)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| HHS archivetotal | Aug 17, 2023 | 599,367 |
| HHS archivetotal | Jan 5, 2024 | 545,001 |
| Vermont AGresidents of VT | Apr 12, 2024 |
History of this record
- 2026-09-25 · records: 545001 to 599367 · backfill source
- 2026-09-25 · disclosed: 2024-01-05 to 2023-08-17 · backfill source
- 2026-09-25 · attack: unknown to hacking · backfill source
- 2026-09-25 · data_types: [] to ["names","health"] · backfill source
- 2026-09-25 · records_basis: empty to hhs · backfill source
- 2026-09-25 · records: empty to 545001 · backfill source
- 2026-09-25 · disclosed: 2024-04-12 to 2024-01-05 · backfill source
- 2026-09-25 · summary: 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, Soci · backfill source
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (Vermont AG), confirmed by Vermont AG. Record counts are as reported. Not legal advice.