The City of Naperville Data Breach: Reported Filing Facts

The City of Naperville is a municipal government entity responsible for providing essential public services, infrastructure management, and administrative oversight to its residents. As a local government body, the City typically collects and stores sensitive personal information including Social Security numbers, residential addresses, driver’s license numbers, and financial payment data related to utility billing, taxes, and permit processing. This data breach was officially reported to the Indiana Attorney General in 2025, confirming that unauthorized parties may have accessed systems containing resident records. If you received a formal data breach notification letter, it indicates that your personal information was potentially compromised during this incident. We recommend reviewing the letter carefully to understand the specific scope of the exposure and the identity protection services being offered by the City.

State: Indiana
Breach date: May 28, 2025
Reported: July 10, 2025

What to do if you were affected

These general steps can help limit the risk of identity theft and fraud after any data breach.

Stay alert to targeted scams
Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.
Keep your notification letter
Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.

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