Understanding your City of Naperville data breach notification letter
If a City of Naperville letter arrived in your mailbox, here is what it means, why you received it, and the free steps you can take right now.
Why you received this letter
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.
What to do after the letter
Confirm the notice is genuine
A legitimate City of Naperville notice references the specific incident reported to the Indiana Attorney General and describes which categories of your information were involved. Compare the letter against the public filing before acting on any links or phone numbers it contains.
Keep the letter — it is your proof of connection
The notification letter is the document that ties your personal information to this incident. Keep the original and photograph it. If you later request a case review, this letter is the strongest evidence that you were among the affected individuals.
Protect your accounts and credit
Depending on what was exposed, consider a free credit freeze with all three bureaus, new passwords for reused credentials, and monitoring of financial statements. These steps are free and do not require you to wait for anyone's permission.
Find out whether you have a claim
Whether the City of Naperville breach gives you a legal claim depends on the facts. A free, no-obligation case review will tell you where you stand — there is no cost and no commitment to find out.
This page summarizes a data breach reported to the Indiana Attorney General for informational purposes and is attorney advertising. It does not create an attorney-client relationship. DataBreachPayment.com does not provide legal advice through this page.