City of Naperville data breach

Clerk's notes

The City of Naperville, a municipal government entity in Indiana, reported a data security incident to the Indiana Attorney General's office on July 10, 2025. This incident, identified on May 28, 2025, potentially involved unauthorized access to systems containing personal information.

While the specific types of data exposed were not detailed in the report, the City of Naperville handles various sensitive records related to public services, infrastructure, and administration. The City has stated that the incident is currently under investigation to determine the full scope and impact of the breach.

If you received a formal data breach notification letter from the City of Naperville, it indicates that your personal information was potentially compromised. We recommend carefully reviewing this letter to understand the specifics of the exposure and any identity protection services or assistance being offered by the City.

Beyond reviewing your notification, consider implementing general protective measures. Monitor your financial accounts and credit reports for any suspicious activity. Be cautious of unsolicited communications, especially those requesting personal details, as these could be phishing attempts. The City of Naperville has not yet released full details regarding the nature of the breach or the exact data types involved.

For those affected by this incident, understanding your rights and options is important. If you are concerned about the potential impact of this data breach on your personal information, you may be eligible for a free case review.

If a notification letter about this breach reached you, see every Indiana data breach on file or browse all cases.