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ILLINOIS DEPARTMENT OF HUMAN SERVICES data breach

Incident readout

Company
ILLINOIS DEPARTMENT OF HUMAN SERVICES
Reported to
Illinois Attorney General
Filed
February 2, 2026
People affected
Not stated in the filing
Incident type in filing
Not stated
Our review
Investigation Open

Was this a ransomware attack?

The filing does not say ransomware was involved. We do not label an incident ransomware unless the company’s report says so. Whatever the cause, the steps to protect yourself and the legal question are the same.

What we know

The Illinois Department of Human Services (IDHS) is a government social services agency responsible for administering public assistance, mental health, and disability support programs for state residents. Because of its role, the agency maintains highly sensitive personal records, including Social Security numbers, income verification, medical history, and detailed household information required to determine program eligibility. This data breach was officially reported to the Illinois Attorney General in 2026, confirming that unauthorized access to these systems occurred. If you have received a formal data breach notification letter from IDHS, it indicates that your personal information was contained within the files accessed during this incident. This notice is intended to inform you of the event and provide guidance on the steps you should take to protect your identity and financial security.

See every breach reported in Illinois or read what to do after a ransomware attack.

Other breaches reported in Illinois

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