Old National Bank (see 2025 Report for Marquis Software Solutions) data breach

Clerk's notes

Old National Bank, a financial institution based in Indiana, has formally notified the Indiana Attorney General of a data security incident. The bank disclosed that unauthorized access to its systems occurred on or around August 14, 2025. This report was officially filed with the state regulator on March 16, 2026, and is currently under investigation.

The specific nature of the data involved in this incident has not been detailed in public filings, but Old National Bank has confirmed that sensitive personal information may have been exposed. The company has begun sending notification letters to individuals potentially affected by this breach, informing them of the event and the measures being taken to address the security of their data.

If you have received a data breach notification letter from Old National Bank, it indicates that your information was likely involved. Review the letter carefully for any specific recommendations provided by the bank. It is also advisable to monitor your financial accounts and credit reports for any unusual activity. Consider placing a fraud alert or security freeze on your credit if you are concerned.

Furthermore, promptly change passwords for any online accounts that may have used the same or similar credentials as those associated with Old National Bank. Be vigilant against unexpected emails, phone calls, or text messages that might attempt to phish for more of your personal details, as scammers often use breach news to target victims.

Understanding your legal options after a data breach is crucial. If your personal information was exposed in the Old National Bank incident, you may have legal rights to explore. Seeking a professional review can help you ascertain the potential ramifications and any available recourse. You can request a free case review to discuss the specifics of this incident and learn more about how it might affect you.

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