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Investigation OpenIndiana AG filing · March 16, 2026

Old National Bank Reports Data Security Incident in 2026 Filing

Old National Bank formally reported a data security incident in a March 2026 filing, indicating unauthorized access to its systems. This event potentially involved personal information held by the Indiana-based financial institution. The bank is notifying affected individuals about the incident and ongoing investigation.

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 on March 16, 2026, according to public filings. This notification concerns unauthorized access to systems maintained by the bank.

The bank stated that the incident involved personal information under its care. While specific categories of data were not detailed in the public record, individuals who received a direct notification letter should review its contents for details pertinent to their situation.

The breach date was identified as August 14, 2025. Old National Bank indicated that an investigation into the scope and nature of this security event is currently underway as of the filing date.

For those who have been notified, it is generally recommended to remain vigilant for suspicious activity. Review account statements, monitor credit reports for any unauthorized activity, and consider placing a fraud alert or credit freeze with major credit bureaus as a precautionary measure.

Such notifications are issued to ensure individuals are aware that their information may have been involved in a security event and to provide guidance on protective steps.

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.

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