> Cause not stated in filing
The DuPage County Sheriff's Office data breach investigation
- Filed
- November 4, 2025
- Regulator
- Indiana AG
- People affected
- Not stated
- File status
- Investigation Open
What the filing confirms
- The DuPage County Sheriff's Office reported the incident to the Indiana Attorney General.
Still unknown
- Which categories of personal information were taken. The filing does not list them.
- How many people were affected. The filing does not give a number.
- What caused the incident beyond the description in the filing.
- How the attackers got in, and whether basic safeguards such as multi-factor sign-in were in place.
Investigation notes
The DuPage County Sheriff's Office is a government law enforcement agency responsible for public safety, correctional facility management, and judicial support services. In the course of these operations, the agency typically collects and stores sensitive personal information, including criminal records, booking data, biometric identifiers, and government-issued identification details for individuals within their jurisdiction. This data breach was officially reported to the Indiana Attorney General in 2025, and affected individuals have since been contacted via a formal data breach notification letter. If you have received this correspondence, it indicates that your personal information held within the Sheriff's Office systems may have been compromised, and you should review the provided instructions carefully to understand the specific risks to your data.
What our attorneys examine
A cyberattack does not excuse a company from protecting the information it holds. We look at whether The DuPage County Sheriff's Office used reasonable security, how long it kept the data, and how quickly it told the people affected. Those questions decide whether a class action or individual claim is possible. Read more on how ransomware lawsuits work, or browse other incident files in Indiana.
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Attorney advertising. An incident file reflects a public regulator filing and our review of it; it does not mean a lawsuit has been filed or that the company did anything unlawful. Submitting a review request does not create an attorney-client relationship.