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DuPage County says ransomware hit sheriff, 18th Judicial Circuit and circuit clerk; investigation ongoing
Summary
DuPage County officials told the Technology Committee on May 6 that a ransomware attack last week affected the sheriff's office, the 18th Judicial Circuit and the circuit court clerk's office. IT staff said recovery is in progress, investigations are ongoing, and a post‑mortem and communications review are planned.
Chairwoman (meeting chair) told the DuPage County Technology Committee on May 6, 2025, that DuPage County was the target of a ransomware attack last week that affected the sheriff’s office, the 18th Judicial Circuit and the circuit court clerk’s office.
The county’s Information Technology staff is conducting a coordinated investigation and recovery effort with the affected offices and outside cybersecurity experts, and officials said they cannot release sensitive details while the investigation is active. "Please remember that the team cannot answer questions or share sensitive details about the incident as this investigation and recovery efforts are ongoing," the chairwoman said.
Why it matters: the incident disrupted…
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