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47 disclosed this week · 26,367 on record

Orrick, Herrington & Sutcliffe

Disclosed Jun 30, 2023506,475 affectedConfirmed

Official notice

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 affected506,475 (as reported by the organization)
DisclosedJun 30, 2023
DiscoveredMar 13, 2023
HappenedFeb 28, 2023
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
sector2026-09-25
other to healthby backfillSource
data_types2026-09-25
[] to ["names","health"]by backfillSource
summary2026-09-25
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 inby backfillSource
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 506475by backfillSource
attack2026-09-25
unknown to hackingby backfillSource
discovered2026-09-25
empty to 2023-03-13by backfillSource
disclosed2026-09-25
2023-07-20 to 2023-06-30by backfillSource
disclosed2026-09-25
2023-07-31 to 2023-07-20by backfillSource
disclosed2026-09-25
2023-08-14 to 2023-07-31by backfillSource
disclosed2026-09-25
2023-08-18 to 2023-08-14by backfillSource
disclosed2026-09-25
2023-08-21 to 2023-08-18by backfillSource
disclosed2026-09-25
2023-11-09 to 2023-08-21by backfillSource
disclosed2026-09-25
2023-12-28 to 2023-11-09by backfillSource
Added2026-09-25
First recordedby backfillSource

First seen 2026-09-25 (California AG), confirmed by California AG. Record counts are as reported. Not legal advice.

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