Old National Bank Reports Data Security Incident in Indiana
Old National Bank officially reported a data security incident in March 2026, indicating unauthorized access to its systems. If you received a notification letter, your personal information may have been compromised, requiring careful attention to your financial security.
This breach is real, not a scam. Old National Bank (see 2025 Report for Marquis Software Solutions) officially reported it to the Indiana Attorney General on March 16, 2026.
Reviewed by David S. Harris, Esq., data breach and class action attorney (Florida Bar No. 0112739). Free consultation: 786-306-7278
Received a Old National Bank (see 2025 Report for Marquis Software Solutions) notification letter? Find out in minutes if you qualify for compensation.
Free case review- State
- Indiana
- Breach date
- August 14, 2025
- Reported
- March 16, 2026
Old National Bank, a financial institution based in Indiana, officially reported a data security incident to state authorities on March 16, 2026. This report follows an event on August 14, 2025, when unauthorized access to its systems was identified.
For individuals who received a data breach notification letter from Old National Bank, it signals that your personal information may have been involved. The public record does not specify the types of information accessed, so it is referred to in general terms as "your data" or "the information involved."
The bank has stated that it is currently investigating the incident to determine its full scope and impact. While this investigation proceeds, it is crucial for affected individuals to remain vigilant regarding their personal accounts and financial activities.
General steps to consider include carefully reviewing account statements for any suspicious or unfamiliar activity. It is also wise to monitor your credit reports regularly and to be cautious of any unsolicited communications, such as emails or phone calls, that request personal details. These practices can help detect potential misuse of your data.
Understanding the implications of a data breach can be complex, and navigating potential next steps may seem daunting. If you are concerned about how this incident might affect you, an attorney review can help clarify your options without obligation.
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 data breach notice and letter questions
- 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 Indiana 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.
- 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. Enrolling does not give up your right to bring a claim.
- 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.
- 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.
- Do I need a Old National Bank data breach lawyer or attorney?
- Talking to a data breach attorney costs nothing here. A lawyer can read your notice, explain your rights under your state's law and tell you whether a claim makes sense.
- 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.
- Can I sue Old National Bank over the data breach?
- It depends on what was exposed, the law in Indiana 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.