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Sierra County Department of Public Health, Department of Behavioral Health

Disclosed Nov 22, 20232,463 affectedConfirmed

Official notice

The covered entity (CE), Sierra County Department of Public Health, Department of Behavioral Health, reported several employees were the subjects of an email phishing attack that affected the protected health information (PHI) of 2,463 individuals. The PHI involved included names, email information, phone numbers, tax identification numbers, Social Security numbers, dates of birth, drivers; license or government identification numbers, health insurance information, medications, and financial information. The CE notified HHS, affected individuals, the media, and provided substitute notice. In response to the breach, the CE provided complimentary credit monitoring services and implemented additional administrative, technical, and security safeguards. Staff were retrained on email security precautions.

What is known

People affected2,463 (as reported to HHS)
DisclosedNov 22, 2023
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
Added2026-09-25
First recordedby backfillSource

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

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