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MonitoringMontana AG filing · December 12, 2025

Lydig Construction, Inc. Data Breach: What the Montana Filing Shows

Lydig Construction, Inc. filed a data breach notice with Montana regulators following a security incident on June 21, 2025. This breach exposed sensitive personal and financial data, including Full Names, Social Security Numbers, and Direct Deposit Account Details, for an unspecified number of individuals. Those affected face an increased risk of identity theft and financial fraud due to the compromise of this information.

State
Montana
Breach date
June 21, 2025
Reported
December 12, 2025

What may have been exposed

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

Lydig Construction, Inc., a commercial general contractor, reported a data security incident to Montana authorities, dated June 21, 2025. The company filed this notice on December 12, 2025, confirming that unauthorized parties gained access to its digital infrastructure. The investigation into the nature and extent of the breach is currently ongoing.

Construction firms like Lydig often manage extensive sensitive data for employees, subcontractors, and partners. While the specific method of attack is unspecified, data security incidents in this sector frequently involve sophisticated cyberattacks targeting corporate networks or third-party platforms. Such attacks can leverage the decentralized nature of construction operations.

The breach exposed several sensitive data categories. These include Full Name, Social Security Number, Date of Birth, Wage and Compensation Information, Tax Return Information, Direct Deposit Account Details, Home Address, and Driver's License Number. It is important to note that the number of individuals affected has not been specified in the public filing.

The exposure of such comprehensive personal and financial information carries significant risks. Compromised data like Social Security Numbers and Direct Deposit Account Details can be used for identity theft, fraudulent credit applications, and unauthorized access to financial accounts. Individuals affected should be aware of these potential consequences.

Individuals who received a breach notification from Lydig Construction should take steps to protect themselves. This includes closely monitoring financial statements and credit reports for suspicious activity. Placing a fraud alert or security freeze on credit files with the three major credit bureaus (Equifax, Experian, Transunion) is also a recommended precaution. Additionally, be wary of unsolicited communications requesting personal information.

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 Lydig Construction, Inc. data breach

How many people were affected by the Lydig Construction, 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, Wage and Compensation Information, Tax Return Information, Direct Deposit Account Details, Home Address, Driver's License Number. 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 Lydig Construction, Inc. breach notice?
Lydig Construction, Inc.'s report is published by the Montana Attorney General: https://dojmt.gov/office-of-consumer-protection/reported-data-breaches/#mt-lydig-construction-inc-2025 Compare it with the letter you received to confirm the dates and details match.
What should I do after getting the Lydig Construction, 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 Lydig Construction, Inc. data breach letter legit or a scam?
A notice from Lydig Construction, Inc. in the mail matches the breach Lydig Construction, Inc. reported to the Montana Attorney General on December 12, 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 Lydig Construction, Inc. through a phone number or website you find yourself.
Did Lydig Construction, Inc. offer free credit monitoring?
Look for an enrollment code in your Lydig Construction, 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. Signing up doesn't waive any legal rights you may have.
Can I sue Lydig Construction, 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 Lydig Construction, 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 Lydig Construction, 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 Lydig Construction, Inc. data breach settlement or claim be worth?
There is no set amount, and no Lydig Construction, 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 Lydig Construction, 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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Lydig Construction, Inc. Data Breach 2025: Filing Record