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Jefferson County Health Center d/b/a Jefferson County Health Department

ArchivedSubmitted 01/13/2023
State
MO
Covered entity type
Healthcare Provider
Individuals affected
115,940
Business associate present
No
Type of breach
Hacking/IT Incident
Location of breached information
Network Server
First seen by InfoSec Signals
9/23/2026
Last seen in OCR export
9/23/2026

OCR description

The covered entity (CE), Jefferson County Health Center dba Jefferson County Health Department, reported that it experienced a ransomware incident that affected the protected health information (PHI) of 115,940 individuals. The PHI involved included names, Social Security numbers, dates of birth, addresses, drivers’ license numbers, diagnoses, lab results, medications, claims and financial information, and other treatment information. The CE notified HHS, affected individuals, the media, and published substitute notice. In response to the breach, the CE offered free credit monitoring and implemented additional administrative and technical safeguards. Staff were also retrained in its requirements to protect and secure PHI.

Change history

  • 9/23/2026Added to OCR's archive list

Source: U.S. Department of Health and Human Services, Office for Civil Rights, Breach Portal. Records are reproduced as published; entity names and figures are OCR's.