Arisa Health
Disclosed Jul 19, 20242 years ago375,436 affectedConfirmed
The covered entity (CE), Arisa Health, reported that it was the subject of a ransomware attack that affected the protected health information (PHI) of 375,436 individuals. The PHI involved included names, addresses, dates of birth, email addresses, Social Security numbers, medical records numbers, diagnoses/conditions, and other treatment information. The CE notified HHS, the affected individuals, the media, and provided substitute notice. In response to the breach, the CE implemented additional administrative, technical, and security safeguards. Staff were retrained.
What is known
| People affected | 375,436 (as reported to HHS) |
|---|---|
| Disclosed | Jul 19, 2024 |
| Happened | Mar 1, 2024 |
| Attack | Hacking |
| Data exposed | Names, Health |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| Indiana Attorney General 2024 data breach report: Arisa Healthin.gov · Official notice | Official notice |
| HHS OCR breach report (archive, resolved): Arisa Health (Healthcare Provider, AR)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| Indiana AGresidents of IN | Jul 19, 2024 | 1 |
| HHS archivetotal | Jul 19, 2024 | 375,436 |
History of this record
- 2026-09-25 · attack: unknown to hacking · backfill source
- 2026-09-25 · data_types: [] to ["names","health"] · backfill source
- 2026-09-25 · records_basis: organization to hhs · backfill source
- 2026-09-25 · records: 1328 to 375436 · backfill source
- 2026-09-25 · summary: empty to The covered entity (CE), Arisa Health, reported that it was the subject of a ransomware attack that affected the protected health information (PHI) of 375,436 individuals. The PHI involved included names, addresses, dates of birth, email ad · backfill source
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (Indiana AG), confirmed by Indiana AG. Record counts are as reported. Not legal advice.