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Case File: UW HEALTH NORTHERN ILLINOIS Data Breach

This file collects the dated facts on record for the UW HEALTH NORTHERN ILLINOIS incident. The state report is dated October 1, 2025.

Timeline

  1. October 1, 2025Report filed in IllinoisDate the notice was lodged with the Illinois Attorney General.

Case facts

Filing state
Illinois
Date reported
October 1, 2025
Receiving office
Illinois Attorney General

Case notes

UW Health Northern Illinois, an organization operating in Illinois, submitted a data breach notification to state authorities on October 1, 2025. This official filing confirms that an event occurred which could have led to the unauthorized disclosure of personal information, though the specific type or method of the breach was not detailed in the public record.

While the filing acknowledges an exposure of personal information, the precise categories of data impacted were not specified. Therefore, individuals who receive notification should be aware that various forms of their sensitive data could be implicated, as determined by the ongoing investigation.

At the time of this regulatory filing, the incident remains under active investigation by UW Health Northern Illinois. This means the organization is working to ascertain the full details, including the nature of the compromise and the complete scope of affected data.

Individuals who are formally notified about this incident are encouraged to carefully review any communications received for specific guidance. General precautions include remaining alert for suspicious activity across your accounts and credit reports. It is also wise to consider placing a fraud alert on your credit files as a proactive measure to help safeguard your information.

Questions about this case file

Where does the UW HEALTH NORTHERN ILLINOIS case file come from?
Every entry is taken from the breach report UW HEALTH NORTHERN ILLINOIS lodged with the Illinois Attorney General. Nothing here is estimated.
Why do the incident date and the report date differ?
Companies usually investigate before they report. The gap between the two dates shows how long that took.
What does the records-affected figure count?
It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.
Does this case file change over time?
Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

More Illinois case files

Illinois data breaches

Filing source: Illinois Attorney General