The Marmon-Herrington Company Data Breach: Reported Filing Facts

Marmon-Herrington Company is an industrial manufacturing firm specializing in heavy-duty vehicle components and drivetrain systems. As an employer and business entity, the company typically collects and maintains sensitive personal information, including employee payroll records, tax documentation, and personnel files containing government-issued identification. This data breach was officially reported to the Indiana Attorney General in 2025, confirming that unauthorized parties may have accessed internal systems. If you received a data breach notification letter, it indicates that your personal information was likely stored within the company’s digital environment at the time of the incident. We recommend reviewing the letter carefully to understand the specific scope of the exposure and the identity monitoring services being offered to protect your financial and personal security.

State: Indiana
Breach date: December 19, 2024
Reported: February 6, 2025

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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