Old National Bank Data Breach: Understanding Your Notification Letter
Old National Bank recently reported a data breach that occurred on August 14, 2025, potentially affecting personal information. If you received a notification letter, it's important to understand what this incident means for you and what steps you can take to protect yourself. This article explains the situation and your options.
This breach is real, not a scam. Old National Bank (see 2025 Report for Marquis Software Solutions) officially reported it to the IN 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
- IN
- Breach date
- August 14, 2025
- Reported
- March 16, 2026
Old National Bank has announced a data breach that began on or around August 14, 2025. While the bank is currently investigating the full scope of the incident, they have begun notifying individuals whose personal information may have been involved. These letters are sent to inform you about the compromise of your data.
Receiving a data breach notification letter from Old National Bank indicates that your personal information was potentially exposed. The letter should provide details about the incident, including when it happened and what actions the bank is taking. It's crucial to read this letter carefully to understand what information of yours may have been affected.
The specific categories of personal information exposed in this incident have not been publicly detailed. Therefore, it's important to understand that any notification you receive confirms that your data was compromised. This situation highlights the importance of monitoring your accounts and being vigilant against potential misuse of your information.
If you've received a notification, consider taking proactive steps. This includes being wary of unexpected communications, reviewing financial statements and account activity for any unfamiliar transactions, and promptly reporting any suspicious activity to the relevant institution. You may also want to consider placing a fraud alert or security freeze on your credit reports.
The legal implications of a data breach can be complex, especially when details about the incident are still under investigation. Understanding your rights and potential recourse is key. If you are concerned about the Old National Bank data breach and how it affects your legal standing, a free case review can help clarify your options.
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.
Your legal options after the Old National Bank data breach
- 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.
- Do I need a Old National Bank data breach lawyer or attorney?
- A data breach attorney can explain whether the law in your state gives you a claim and what proof you'd need. Reviews here are free, and these cases are normally taken on contingency.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
Source: IN Attorney General filing
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