Hayward Sisters Hospital
Disclosed Jan 12, 20233 years ago115,241 affectedConfirmed
The covered entity (CE), Hayward Sisters Hospital dba St. Rose Hospital, reported that it was the subject of a ransomware attack that affected the protected health information (PHI) of 115,241 individuals. The PHI involved included names, addresses, dates of birth, Social Security numbers, drivers’ license and passport numbers, e-mail addresses, claims and financial information, diagnoses, lab results, medications, health insurance information, and other treatment information. The CE notified HHS, affected individuals, and the media. 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 | 115,241 (as reported to HHS) |
|---|---|
| Disclosed | Jan 12, 2023 |
| Happened | Nov 18, 2022 |
| Attack | Hacking |
| Data exposed | Names, Health |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| California Attorney General breach notice: Hayward Sisters Hospitaloag.ca.gov · Official notice | Official notice |
| Vermont Attorney General: 2023-08-03 Hayward Sisters Hospital dba St. Rose Hospital Data Breach Notice to Consumersago.vermont.gov · Official notice | Official notice |
| HHS OCR breach report (archive, resolved): Hayward Sisters Hospital (Healthcare Provider, CA)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| California AGresidents of CA | Jan 12, 2023 | |
| HHS archivetotal | Jan 27, 2023 | 115,241 |
| California AGresidents of CA | Aug 3, 2023 | |
| Vermont AGresidents of VT | Aug 3, 2023 |
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: empty to hhs · backfill source
- 2026-09-25 · records: empty to 115241 · backfill source
- 2026-09-25 · summary: empty to The covered entity (CE), Hayward Sisters Hospital dba St. Rose Hospital, reported that it was the subject of a ransomware attack that affected the protected health information (PHI) of 115,241 individuals. The PHI involved included names, a · backfill source
- 2026-09-25 · source: empty to https://ago.vermont.gov/document/2023-08-03-hayward-sisters-hospital-dba-st-rose-hospital-data-breach-notice-consumers · backfill source
- 2026-09-25 · disclosed: 2023-08-03 to 2023-01-12 · 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.