DataBreachCaseFile.com
Investigation OpenIN AG filing · March 16, 2026

Old National Bank Reports August 2025 Data Security Incident

Old National Bank has filed a report regarding a data security incident that took place on August 14, 2025. While specific details about the type of personal information involved are not yet available, the event is currently under investigation. Individuals who may be affected are advised to take general precautions to protect their data.

State
IN
Breach date
August 14, 2025
Reported
March 16, 2026

Old National Bank has reported a data security incident originating on August 14, 2025. The financial institution officially filed notice of this event on March 16, 2026, as documented in public records from Indiana.

The specific categories of personal information impacted by this incident have not been disclosed in the public filings. Similarly, the exact number of individuals potentially affected by this security event remains unspecified at this time, in line with the available reported facts.

At the time of the official filing, the incident was noted as still being actively investigated. This indicates that further information may become available as the inquiry progresses and the full scope of the breach is understood.

Individuals concerned about their personal information should consider monitoring their financial accounts and credit reports for any signs of suspicious activity. It is also a recommended general practice to update passwords for important online services and review privacy settings.

This documentation is provided by DataBreachCaseFile.com based on the official public disclosures, serving as a factual record of reported data security events.

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.

Old National Bank breach filing: questions and answers

Where can I see the official Old National Bank breach notice?
Old National Bank's report is published by the IN Attorney General: https://www.in.gov/attorneygeneral/consumer-protection-division/id-theft-prevention/security-breaches/#old-national-bank-see-2025-report-for-marquis-software-solut-2026 Compare it with the letter you received to confirm the dates and details match.
Is there a Old National Bank data breach class action lawsuit?
Law firms often open an investigation after a breach notice like this one, and a class action lawsuit may follow. This page doesn't confirm that a lawsuit has been filed against Old National Bank. You usually don't have to join a class action to be included — if a settlement is reached, class members are notified and can file a claim.
Is the Old National Bank data breach letter legit or a scam?
A notice from Old National Bank in the mail matches the breach Old National Bank reported to the IN Attorney General on March 16, 2026. Check that the company name and dates in your letter match that filing. A real notice of data security incident won't ask for your password, Social Security number or a payment — if it does, contact Old National Bank through a phone number or website you find yourself.
Can I sue Old National Bank over the data breach?
It depends on what was exposed, the law in IN and your own state, and whether you've been harmed. Most people take part through a class action rather than suing alone. Keep your notification letter — it's the proof that connects you to the breach.
How much could a Old National Bank data breach settlement or claim be worth?
There is no set amount, and no Old National Bank settlement is confirmed here. In past data breach settlements, payments depended on what data was exposed and on documented losses — fraud, out-of-pocket costs and time spent dealing with the breach. Keep receipts and records; they're what damages claims are built on.
Did Old National Bank offer free credit monitoring?
Any free monitoring Old National Bank is offering will be described in the notice you received, along with an activation code and a sign-up deadline. Signing up doesn't waive any legal rights you may have.
Do I need a Old National Bank data breach lawyer or attorney?
An attorney can read your notice and tell you whether a claim makes sense. A case review here is free, and data breach cases are usually handled on contingency, so there is no upfront cost.
What should I do after getting the Old National Bank data breach notice?
Keep the letter and the envelope, and note the date it arrived. Freeze your credit with Equifax, Experian and TransUnion, change any passwords the notice mentions, and sign up for any free credit monitoring the letter offers. Then check whether you may have a claim.

Source: IN Attorney General filing

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