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Got a notice from The City of Naperville, Illinois? Here’s what to do.

The City of Naperville, Illinois told the New Hampshire Attorney General that people’s information was exposed. If you got a letter, work through the steps below.

Your checklist

  1. 1

    Keep the letter

    Save the notice from The City of Naperville, Illinois and its envelope. The date you were told can matter for legal deadlines.

  2. 2

    Freeze your credit

    The filing does not list what was taken, so play it safe. A free freeze at Equifax, Experian and TransUnion stops new accounts being opened in your name.

  3. 3

    Change reused passwords

    Change any password you used with this company or reused elsewhere, and turn on two-factor sign-in.

  4. 4

    Get a free claim review

    Our legal team checks whether you can be paid for this breach. No fee unless you recover.

Step 4: free claim review

Tell us you got the The City of Naperville, Illinois notice. An attorney, not a call center, reads it and tells you plainly whether you have a claim.

  • Free, no obligation
  • No fee unless you recover
  • Reply within 24 hours

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About the The City of Naperville, Illinois breach

Reported to
New Hampshire Attorney General
Date filed
July 14, 2025
People notified
Not stated
Cause in filing
Not stated

The City of Naperville, Illinois is a municipal government entity responsible for providing public services, maintaining infrastructure, and managing administrative records for its residents. In the course of these operations, the city typically collects and stores sensitive personal information, including government identification numbers, tax records, utility account details, and employment-related data for municipal staff. This data breach was officially reported to the New Hampshire Attorney General in 2025, confirming that unauthorized access to certain systems occurred. If you have received a formal data breach notification letter, it indicates that your personal information may have been involved in this incident. This notification is intended to provide you with transparency regarding the event and guidance on the necessary steps to protect your identity and financial security.

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Other notices sent in New Hampshire

Attorney advertising. This page reflects a public regulator filing; 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.