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MonitoringMontana AG filing · December 31, 2025

Harnish Group Inc. Reports Data Security Incident in Montana

Harnish Group Inc. filed a report with the Montana Attorney General on December 31, 2025, concerning a data security incident identified on November 11, 2025. This incident involved the potential exposure of highly sensitive personal information, creating an elevated risk of identity theft for those affected.

State
Montana
Breach date
November 11, 2025
Reported
December 31, 2025

What may have been exposed

  • Full Name
  • Social Security Number
  • Date of Birth
  • Mailing Address
  • Driver's License Number
  • Wage and Compensation Information
  • Tax Return Information
  • Direct Deposit Account Details

Harnish Group Inc., an equipment dealer, formally reported a data security incident to the Montana Attorney General's office on December 31, 2025. The company stated that it detected the incident on November 11, 2025, and the matter is currently under monitoring.

The breach filing specifies that several categories of personal data were potentially compromised. These include individuals' Full Name, Social Security Number, Date of Birth, Mailing Address, and Driver's License Number. Additionally, Wage and Compensation Information, Tax Return Information, and Direct Deposit Account Details were also reported as exposed.

Exposure of these sensitive data types can lead to a significant risk of identity theft and financial fraud. Compromised information, particularly Social Security Numbers, can be used for unauthorized access to financial accounts, fraudulent tax filings, or opening new credit lines in an individual's name.

Individuals who receive an official notification from Harnish Group Inc. should carefully review the information provided. It is a widely recommended precaution to monitor financial accounts and credit reports for any unusual activity. Placing a fraud alert or credit freeze on your credit files can also help prevent new credit from being opened fraudulently.

What to do if you were affected

Based on the categories of information reported in this filing, these steps can help limit the risk of identity theft and fraud.

  • Freeze your credit

    Place a free credit freeze with Equifax, Experian, and TransUnion. A freeze blocks new accounts from being opened in your name and can be lifted anytime.

  • Guard against tax fraud

    File your tax return as early as possible and consider requesting an IRS Identity Protection PIN so no one can file a fraudulent return in your name.

  • Watch your financial accounts

    Review bank and card statements for unfamiliar activity and turn on transaction alerts. Report anything you don't recognize to your bank right away.

  • Replace exposed ID documents

    Contact your state DMV or the issuing agency about replacing an exposed driver's license, passport, or government ID number.

  • 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.

What to know about the Harnish Group Inc. data breach

How many people were affected by the Harnish Group Inc. data breach, and what was exposed?
The filing does not give a count of affected people and lists the following information as involved: Full Name, Social Security Number, Date of Birth, Mailing Address, Driver's License Number, Wage and Compensation Information, Tax Return Information, Direct Deposit Account Details. Your own letter is the best guide to what was exposed about you, since notices are usually tailored to each person.
Where can I see the official Harnish Group Inc. breach notice?
Harnish Group Inc.'s report is published by the Montana Attorney General: https://dojmt.gov/office-of-consumer-protection/reported-data-breaches/#mt-harnish-group-inc-2025 Compare it with the letter you received to confirm the dates and details match.
What should I do after getting the Harnish Group Inc. 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 the Harnish Group Inc. data breach letter legit or a scam?
A notice from Harnish Group Inc. in the mail matches the breach Harnish Group Inc. reported to the Montana Attorney General on December 31, 2025. 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 Harnish Group Inc. through a phone number or website you find yourself.
Did Harnish Group Inc. offer free credit monitoring?
Look for an enrollment code in your Harnish Group Inc. notice. Companies that offer free credit monitoring after a breach usually include it there, with a deadline to activate. Because Social Security numbers are listed in this filing, identity monitoring and a credit freeze matter more than usual. Using the free service won't stop you from joining a lawsuit or settlement later.
Can I sue Harnish Group Inc. over the data breach?
It depends on what was exposed, the law in Montana 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.
Is there a Harnish Group Inc. 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 Harnish Group Inc.. 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.
How much could a Harnish Group Inc. data breach settlement or claim be worth?
There is no set amount, and no Harnish Group Inc. 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. The filing lists Full Name, Social Security Number, Date of Birth as involved. Keep receipts and records; they're what damages claims are built on.
Do I need a Harnish Group Inc. data breach lawyer or attorney?
An attorney can read your notice and tell you whether a claim makes sense. A case review here is free, and data breach cases are usually handled on contingency, so there is no upfront cost.

Source: Montana Attorney General filing

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