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The Michael Larson Co., PC data breach

Incident readout

Company
The Michael Larson Co., PC
Reported to
Oregon Attorney General
Filed
March 18, 2026
People affected
Not stated in the filing
Incident type in filing
Not stated
Our review
Monitoring
Read the official filing

Was this a ransomware attack?

The filing does not say ransomware was involved. We do not label an incident ransomware unless the company’s report says so. Whatever the cause, the steps to protect yourself and the legal question are the same.

Information listed in the filing

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

What we know

The Michael Larson Co., PC functions as a specialized professional services firm, operating within the legal and financial advisory sector to provide comprehensive counsel, estate planning, corporate governance, and complex tax strategy. Because of the sophisticated nature of their practice, the firm routinely collects, analyzes, and maintains vast repositories of highly sensitive client records. This includes not only corporate financial statements and transactional histories, but also deeply confidential personal information such as Social Security numbers, banking details, asset portfolios, and detailed legal documentation required for high-stakes litigation and financial structuring.

In 2026, official disclosures submitted to the Oregon Attorney General revealed that The Michael Larson Co., PC experienced a significant cybersecurity incident compromising their digital infrastructure. While the exact vector of the attack remains under ongoing forensic investigation, breaches affecting legal and professional services firms typically involve sophisticated cybercriminal enterprises executing unauthorized network intrusions, ransomware deployments, or third-party vendor compromises. These threat actors specifically target professional firms because law and accounting practices serve as central hubs for high-value financial data and confidential communications, making their networks prime targets for exploitation and extortion.

Preliminary indications suggest that the unauthorized access exposed a devastating array of private information, creating severe, long-term risks for affected individuals. The compromised data fields commonly include full legal names, dates of birth, Social Security numbers, banking account and routing numbers, tax return filings, and confidential legal or financial correspondence. Exposure of this magnitude strips away fundamental privacy protections, leaving victims highly vulnerable to sophisticated identity theft, fraudulent tax filings, unauthorized credit card openings, and targeted financial account takeovers that can take years to detect and resolve.

As a custodian of heavily regulated financial and personal data, The Michael Larson Co., PC was legally obligated to implement robust administrative, physical, and technical safeguards to protect client and employee files. Under state data breach notification statutes, common law negligence standards, and applicable federal regulatory frameworks governing professional confidentiality and data security, the firm had a duty to maintain adequate encryption, robust firewall architectures, and comprehensive access controls. The occurrence of a widespread data breach strongly suggests a potential failure to satisfy these foundational security obligations, raising serious questions regarding the adequacy of the firm's defensive posture.

Receiving an official data breach notification letter from The Michael Larson Co., PC serves as formal legal admission that your private records were compromised due to corporate negligence. This notification establishes the legal standing necessary to participate in a class action lawsuit aimed at holding the firm accountable for failing to secure your sensitive information. Individuals whose data was exposed do not need to prove that they have already suffered direct financial loss to seek legal recourse; the increased risk of future identity theft and the loss of privacy are actionable damages under the law. Our firm evaluates these cases on a contingency fee basis, ensuring that you pay absolutely nothing out of pocket unless we successfully recover compensation on your behalf.

See every breach reported in Oregon or read what to do after a ransomware attack.

After the The Michael Larson Co., PC incident: what to do and your options

What should I do after getting the The Michael Larson Co., PC 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.
How many people were affected by the The Michael Larson Co., PC 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, Financial Account Number, Home Address. Your own letter is the best guide to what was exposed about you, since notices are usually tailored to each person.
Did The Michael Larson Co., PC offer free credit monitoring?
Check your letter from The Michael Larson Co., PC. If free credit or identity monitoring is offered, the enrollment code and deadline are printed in the notice itself. 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.
Where can I see the official The Michael Larson Co., PC breach notice?
The Michael Larson Co., PC's report is published by the Oregon Attorney General: https://justice.oregon.gov/consumer/databreach/#The%20Michael%20Larson%20Co.%2C%20PC-2026-03-18 Compare it with the letter you received to confirm the dates and details match.
Can I sue The Michael Larson Co., PC over the data breach?
It depends on what was exposed, the law in Oregon 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.
Do I need a The Michael Larson Co., PC data breach lawyer or attorney?
Whether the company's systems were encrypted by ransomware or data was simply taken, the legal question is the same: did it protect your information the way the law requires? An attorney can review your notice for free, and these cases are usually handled on contingency.
Is there a The Michael Larson Co., PC 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 The Michael Larson Co., PC. 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.
Is the The Michael Larson Co., PC data breach letter legit or a scam?
A notice from The Michael Larson Co., PC in the mail matches the breach The Michael Larson Co., PC reported to the Oregon Attorney General on March 18, 2026. 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 The Michael Larson Co., PC through a phone number or website you find yourself.
How much could a The Michael Larson Co., PC data breach settlement or claim be worth?
There is no set amount, and no The Michael Larson Co., PC 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.

Other breaches reported in Oregon

Attorney advertising. This page reflects a public regulator filing; it does not mean a lawsuit has been filed or that the company did anything unlawful. Submitting a review request does not create an attorney-client relationship.