Ascension Health
Disclosed Jul 3, 20242 years ago5,466,931 affectedConfirmed
What is known
| People affected | 5,466,931 (as reported to HHS) |
|---|---|
| Disclosed | Jul 3, 2024 |
| Discovered | May 8, 2024 |
| Happened | Feb 29, 2024 |
| Attack | Ransomware |
| Data exposed | Names, Health |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| California Attorney General breach notice: Ascension Healthoag.ca.gov · Official notice | Official notice |
| Washington Attorney General breach notice: Ascension Healthatg.wa.gov · Official notice | Official notice |
| Oregon DOJ breach notice: Ascension Healthjustice.oregon.gov · Official notice | Official notice |
| HHS OCR breach report: Ascension Health (Healthcare Provider, MO)ocrportal.hhs.gov · Official notice | Official notice |
| Indiana Attorney General 2025 data breach report: Ascension Healthin.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| HHS archivetotal | Jul 3, 2024 | 5,466,931 |
| California AGresidents of CA | Dec 19, 2024 | |
| Washington AGresidents of WA | Dec 19, 2024 | 5,787 |
| Oregon DOJresidents of OR | Dec 19, 2024 | 5,599,699 |
| California AGresidents of CA | Feb 3, 2025 | |
| Oregon DOJresidents of OR | Feb 3, 2025 | 5,466,931 |
| HHS OCRtotal | Apr 28, 2025 | 437,329 |
| Indiana AGresidents of IN | Apr 28, 2025 | 169,183 |
History of this record
- 2026-09-25 · records: 437329 to 5466931 · backfill source
- 2026-09-25 · disclosed: 2024-12-19 to 2024-07-03 · backfill source
- 2026-09-25 · source: empty to https://www.in.gov/attorneygeneral/consumer-protection-division/id-theft-prevention/files/DB-Year-to-Date-Report-2025.pdf · 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 437329 · backfill source
- 2026-09-25 · attack: unknown to ransomware · backfill source
- 2026-09-25 · discovered: empty to 2024-05-08 · backfill source
- 2026-09-25 · disclosed: 2025-02-03 to 2024-12-19 · backfill source
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (California AG), confirmed by California AG. Record counts are as reported. Not legal advice.