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Sonoma Underground Services Inc data breach investigation

Sonoma Underground Services Inc reported a data security incident to Indiana authorities, exposing sensitive personal information including Social Security Number, Direct Deposit Account Details, and Driver's License Number. This incident, reported in August 2026, puts affected individuals at risk of identity theft and financial fraud, prompting an investigation into the company's security practices.

Filed
August 6, 2026
Regulator
Indiana AG
People affected
Not stated
File status
Monitoring

What the filing confirms

  • Sonoma Underground Services Inc reported the incident to the Indiana Attorney General.
  • Information involved: Full Name, Social Security Number, Date of Birth, Wage and Compensation Information, Direct Deposit Account Details, Home Address, Driver's License Number, Tax Withholding Information.

Still unknown

  • How many people were affected. The filing does not give a number.
  • What caused the incident beyond the description in the filing.
  • How the attackers got in, and whether basic safeguards such as multi-factor sign-in were in place.
Read the filing at the source

Investigation notes

An investigation is underway into a data security incident reported by Sonoma Underground Services Inc to the Indiana Attorney General on August 6, 2026. While the precise nature of the breach remains unspecified in public filings, the company confirmed that personal information was exposed to unauthorized access, with the breach event occurring on or about December 10, 2025.

The compromised data categories are extensive and highly sensitive. They include your Full Name, Social Security Number, Date of Birth, Wage and Compensation Information, Direct Deposit Account Details, Home Address, Driver's License Number, and Tax Withholding Information. The exposure of such critical identifiers and financial data creates a substantial risk of identity theft, financial fraud, and other harms that may not become apparent for some time.

Companies like Sonoma Underground Services Inc have a legal obligation to protect the personal information they collect and store. This duty requires implementing robust security measures to prevent unauthorized access. The occurrence of a data breach suggests that these safeguards may have been inadequate or failed, raising questions about whether the company met its legal responsibility to protect your data.

If you received a notification letter from Sonoma Underground Services Inc, it serves as formal confirmation that your private information was compromised due to this incident. You do not need to have already suffered financial loss to have a potential legal claim; the increased risk of future identity theft and the costs associated with mitigating that risk are often sufficient grounds for action. These circumstances may give rise to a class action lawsuit aimed at holding the company accountable for its security failures and seeking compensation for affected individuals.

We are currently monitoring and investigating this incident to determine the full scope of the company's liability. Understanding your legal rights and options is crucial in the wake of such an exposure. Consulting with an attorney can help you navigate the next steps.

What our attorneys examine

A cyberattack does not excuse a company from protecting the information it holds. We look at whether Sonoma Underground Services Inc used reasonable security, how long it kept the data, and how quickly it told the people affected. Those questions decide whether a class action or individual claim is possible. Read more on how ransomware lawsuits work, or browse other incident files in Indiana.

Sonoma Underground Services Inc data breach questions

How many people were affected by the Sonoma Underground Services 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, Direct Deposit Account Details, Home Address, Driver's License Number, Tax Withholding Information. Your own letter is the best guide to what was exposed about you, since notices are usually tailored to each person.
Is the Sonoma Underground Services Inc data breach letter legit or a scam?
A notice from Sonoma Underground Services Inc in the mail matches the breach Sonoma Underground Services Inc reported to the Indiana Attorney General on August 6, 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 Sonoma Underground Services Inc through a phone number or website you find yourself.
Did Sonoma Underground Services Inc offer free credit monitoring?
Any free monitoring Sonoma Underground Services Inc is offering will be described in the notice you received, along with an activation code and a sign-up deadline. 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.
Is there a Sonoma Underground Services 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 Sonoma Underground Services 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.
What should I do after getting the Sonoma Underground Services 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.
Where can I see the official Sonoma Underground Services Inc breach notice?
Sonoma Underground Services Inc's report is published by the Indiana Attorney General: https://www.in.gov/attorneygeneral/consumer-protection-division/id-theft-prevention/security-breaches/#3sonoma-underground-services-inc-2026 Compare it with the letter you received to confirm the dates and details match.
Do I need a Sonoma Underground Services 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.
Can I sue Sonoma Underground Services Inc over the data breach?
It depends on what was exposed, the law in Indiana 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.
How much could a Sonoma Underground Services Inc data breach settlement or claim be worth?
There is no set amount, and no Sonoma Underground Services 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.

Other open files in Indiana

Attorney advertising. An incident file reflects a public regulator filing and our review of it; 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.