Orrick, Herrington & Sutcliffe
Disclosed Jun 30, 20233 years ago506,475 affectedConfirmed
The business associate (BA), Orrick, Herrington, and Sutcliffe, reported that it experienced a cyber-attack that compromised the protected health information (PHI) of 342,176 individuals. The PHI involved included names, health insurance information, diagnoses, email addresses, phone numbers Social Security numbers, birthdates, and home addresses. The BA notified HHS, affected individuals, the media, and provided substitute notice. In response to the breach, the BA provided complimentary credit monitoring services and implemented additional administrative and technical safeguards to better protect PHI.
What is known
| People affected | 506,475 (as reported by the organization) |
|---|---|
| Disclosed | Jun 30, 2023 |
| Discovered | Mar 13, 2023 |
| Happened | Feb 28, 2023 |
| Attack | Hacking |
| Data exposed | Names, Health |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| California Attorney General breach notice: Orrick, Herrington & Sutcliffeoag.ca.gov · Official notice | Official notice |
| Washington Attorney General breach notice: Orrick, Herrington & Sutcliffeatg.wa.gov · Official notice | Official notice |
| Oregon DOJ breach notice: Orrick, Herrington & Sutcliffejustice.oregon.gov · Official notice | Official notice |
| Indiana Attorney General 2023 data breach report: Orrick, Herrington & Sutcliffein.gov · Official notice | Official notice |
| HHS OCR breach report (archive, resolved): Orrick, Herrington & Sutcliffe (Business Associate, CA)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| California AGresidents of CA | Jun 30, 2023 | |
| Washington AGresidents of WA | Jun 30, 2023 | 6,376 |
| Oregon DOJresidents of OR | Jun 30, 2023 | 118,965 |
| HHS archivetotal | Jun 30, 2023 | 342,176 |
| California AGresidents of CA | Jul 20, 2023 | |
| California AGresidents of CA | Jul 20, 2023 | |
| Indiana AGresidents of IN | Jul 20, 2023 | 15,275 |
| California AGresidents of CA | Jul 31, 2023 | |
| California AGresidents of CA | Aug 14, 2023 | |
| California AGresidents of CA | Aug 18, 2023 | |
| Oregon DOJresidents of OR | Aug 18, 2023 | 461,100 |
| California AGresidents of CA | Aug 21, 2023 | |
| California AGresidents of CA | Nov 9, 2023 | |
| California AGresidents of CA | Dec 28, 2023 |
History of this record
- 2026-09-25 · sector: other to health · backfill source
- 2026-09-25 · data_types: [] to ["names","health"] · backfill source
- 2026-09-25 · summary: empty to The business associate (BA), Orrick, Herrington, and Sutcliffe, reported that it experienced a cyber-attack that compromised the protected health information (PHI) of 342,176 individuals. The PHI involved included names, health insurance in · backfill source
- 2026-09-25 · records_basis: empty to organization · backfill source
- 2026-09-25 · records: empty to 506475 · backfill source
- 2026-09-25 · attack: unknown to hacking · backfill source
- 2026-09-25 · discovered: empty to 2023-03-13 · backfill source
- 2026-09-25 · disclosed: 2023-07-20 to 2023-06-30 · backfill source
- 2026-09-25 · disclosed: 2023-07-31 to 2023-07-20 · backfill source
- 2026-09-25 · disclosed: 2023-08-14 to 2023-07-31 · backfill source
- 2026-09-25 · disclosed: 2023-08-18 to 2023-08-14 · backfill source
- 2026-09-25 · disclosed: 2023-08-21 to 2023-08-18 · backfill source
- 2026-09-25 · disclosed: 2023-11-09 to 2023-08-21 · backfill source
- 2026-09-25 · disclosed: 2023-12-28 to 2023-11-09 · 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.