Harnish Group Inc. Files Data Breach Notice with Montana AG

Harnish Group Inc. confirmed an incident involving unauthorized access to its protected systems, which led to a data breach. The breach date is identified as November 11, 2025. This incident was officially reported to the Montana Attorney General on December 31, 2025, as part of its regulatory obligations.

The filing indicates that personal information stored within Harnish Group Inc.'s environment may have been exposed. While the specific categories of data involved were not detailed in the public record, the company's notification suggests that individuals who received a letter were affected.

Harnish Group Inc. operates in professional services or industrial equipment, typically managing extensive administrative records. Such organizations often handle sensitive personal information during their business operations. The current investigation aims to clarify the full scope of the breach.

If you received a data breach notification letter from Harnish Group Inc., review it carefully for specific instructions and details relevant to your situation. The letter should outline any identity protection services or steps offered by the company.

It is advisable to remain vigilant against potential identity theft or fraud by monitoring your financial accounts and credit reports. Consider placing a fraud alert or security freeze on your credit if recommended by the notification.