IN · AG Filing: Aug 6, 2026 · Recently disclosed — legal window is open
No cost. No obligation. If your data was exposed by Sonoma Underground Services Inc, you may be entitled to financial compensation.
Start Free Review →Based on the data types reported in this filing:
Your SSN is the master key to your identity. Once exposed, criminals can open new lines of credit, take out loans, or file taxes in your name.
Combined with a name and other leaked data, date of birth helps criminals pass identity verification questions at banks and government agencies.
Sonoma Underground Services Inc was the subject of a data breach notification filed with the IN Attorney General. The AG filing was recorded on August 6, 2026. The breach or discovery date reported in the filing is December 10, 2025.
From the AG filing description
3Sonoma Underground Services Inc operates as a critical infrastructure and utility contractor, specializing in underground construction, directional drilling, trenching, and municipal utility installation. Because the company routinely bids on and executes complex public works, civil engineering projects, and commercial site developments, it functions as a central repository for extensive, highly sensitive information. Managing large-scale crews, heavy equipment fleets, and intricate project logistics requires maintaining deep databases containing comprehensive personnel records, subcontractor profiles, and proprietary engineering designs. Furthermore, as an employer and corporate entity operating within the construction and utility sector, 3Sonoma Underground Services Inc holds expansive administrative files necessary for payroll administration, employee onboarding, tax compliance, and commercial vendor management. In 2026, 3Sonoma Underground Services Inc formally reported a significant data security incident to the Indiana Attorney General's office. While the precise technical vector remains under ongoing forensic evaluation, data breaches affecting infrastructure and contractor firms typically stem from sophisticated cyber threats such as targeted ransomware deployments, credential harvesting campaigns aimed at administrative staff, or unauthorized infiltration of corporate network perimeters. In many instances, malicious actors exploit legacy software vulnerabilities or leverage compromised third-party vendor credentials to bypass security controls, gaining lateral movement within internal databases where sensitive corporate and personnel files are stored without adequate segmentation. The exposure resulting from the 3Sonoma Underground Services Inc incident encompasses a concentrated array of highly sensitive personal information, creating substantial and immediate risk for affected individuals. The compromise of core identifiers such as full names, dates of birth, and Social Security numbers leaves victims permanently vulnerable to sophisticated identity theft, synthetic identity creation, and fraudulent credit applications that can remain undetected for years. Additionally, the potential exposure of banking details, direct deposit specifications, and wage records opens the door to direct financial account takeovers and fraudulent tax filings. Because utility and construction contractors frequently process sensitive background checks and compliance documentation, victims face prolonged exposure to financial fraud that requires ongoing monitoring and remediation efforts. Under applicable state data protection statutes, including the Indiana Disclosure of Security Breach Law, alongside general common law duties, 3Sonoma Underground Services Inc maintained an affirmative legal obligation to implement and maintain reasonable security procedures and practices to safeguard sensitive personal information entrusted to its care. Corporations that collect and store high-risk data are legally bound to deploy robust administrative, physical, and technical safeguards—such as multi-factor authentication, endpoint detection and response tools, and routine vulnerability patching—to prevent unauthorized access. The occurrence of a widespread data breach strongly suggests potential shortcomings or failures in these mandated security protocols, raising serious questions regarding whether the company fully met its legal duty of care to protect the individuals whose data it routinely harvests. For current and former employees, subcontractors, and associated individuals, receiving a data breach notification letter from 3Sonoma Underground Services Inc serves as formal legal confirmation that their private information has been compromised due to corporate negligence. Legally, the issuance of this notice establishes the foundation required to participate in a class action lawsuit aimed at holding the company accountable for failing to secure its digital environment. Under modern data breach jurisprudence, affected individuals do not need to prove that they have already suffered actual financial loss to seek legal recourse; the increased and imminent risk of future identity theft and the time and expense required for mitigation are sufficient to establish legal standing. Our firm is currently investigating potential class action claims on behalf of all impacted individuals on a contingency fee basis, meaning there are never any out-of-pocket costs or attorney fees unless a recovery is successfully obtained.
You may have been affected by the Sonoma Underground Services Inc data breach if:
Common categories of compensation in data breach class actions
The hours spent responding to a data breach — canceling accounts, contacting credit bureaus, updating passwords, and investigating fraud — represent compensable economic harm in data breach litigation.
Once your SSN is exposed, protection becomes an ongoing expense. Plaintiffs in data breach settlements have recovered costs for credit freezes, identity protection subscriptions, and time spent dealing with fraudulent accounts — sometimes covering multiple years of exposure.
Fees charged to close and reopen accounts, issue replacement cards, or dispute fraudulent transactions are recoverable in data breach litigation. So are the costs of overdrafts, late payments, and credit damage caused by unauthorized activity.
Several state data breach laws provide for statutory minimum damages — fixed amounts recoverable per affected individual regardless of actual loss. These provisions exist specifically to make legal action viable for victims who have not yet experienced direct harm.
Note: an attorney general breach filing does not by itself establish a settlement fund, a payment amount, or a claim deadline. If an official settlement notice is later issued, rely on that notice for payment details and deadlines.
Applicable State Law
This breach was reported under the Indiana data breach notification law, which mandates notification and establishes your right to seek damages.
No. Under Indiana data breach notification law and federal law, the unauthorized exposure of your personal data — regardless of whether it has been actively misused — can be sufficient grounds for a claim. The breach itself is the injury.
Nothing. The Law Office of David S. Harris handles data breach cases on contingency — you pay zero upfront and owe nothing unless compensation is recovered.
Immediately place a free credit freeze at all three bureaus (Equifax, Experian, TransUnion). A freeze blocks new accounts from being opened in your name. Then file a complaint with the FTC at IdentityTheft.gov and contact our office — SSN exposure is one of the most serious breach types.
Banks may reverse fraudulent charges, but they are not obligated to compensate you for time lost, stress, or indirect damages. A class action claim against the breached company can recover those additional categories of harm.
State statutes of limitations for data breach claims typically run 2–4 years from the date of the breach or its discovery. Because this breach was recently disclosed, the window is open — but acting early preserves your options and strengthens the case.
Accepting free credit monitoring from Sonoma Underground Services Inc does not waive your right to pursue legal action unless you signed a specific release waiving claims. In most cases, victims who accepted monitoring can still file.
Not necessarily. Many data breach victims are never notified directly. If your personal information was held by Sonoma Underground Services Inc during the relevant period, you may still qualify even without receiving a letter. A free eligibility review can confirm your status.
Learn how to participate in the class action and what compensation you may be entitled to.
Join the Class Action →Use our verification tool to confirm your letter matches this official AG filing.
Verify My Notice LetterThis case file references a public filing made with the state filing in IN. This website is not affiliated with, endorsed by, or operated by any state government agency.
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