Sonoma Underground Services Inc Data Breach Impacts Indiana Residents
By Data Breach Law Group | Posted on August 6, 2026 · Indiana
Sonoma Underground Services Inc has reported a significant data security incident to Indiana authorities, exposing sensitive personal and financial details. Our firm is investigating potential claims on behalf of individuals whose information was compromised, offering a no-cost legal review.
DataBreachLawGroup.com is announcing an investigation into the recently reported data breach involving Sonoma Underground Services Inc, an Indiana-based critical infrastructure and utility contractor. The incident, which occurred on or about December 10, 2025, was formally reported to regulatory bodies on August 6, 2026.
While the specific details of how the breach occurred are still under review, the incident has potentially exposed a comprehensive range of sensitive personal information. The compromised data categories include individuals' 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.
This extensive exposure creates significant risks for affected individuals. The combination of full names, Social Security numbers, and dates of birth can be leveraged for sophisticated identity theft, fraudulent credit applications, and even synthetic identity creation. Furthermore, the compromise of wage and compensation data, direct deposit account details, and tax withholding information places individuals at heightened risk for financial fraud and potential account takeovers.
Under Indiana data protection statutes, Sonoma Underground Services Inc had a legal obligation to implement reasonable security measures to protect the sensitive personal information entrusted to its care. The occurrence of this data breach suggests a potential failure in these security protocols, raising questions about whether the company met its duty to safeguard consumer data.
Individuals who have received a data breach notification letter from Sonoma Underground Services Inc are urged to take proactive steps to protect themselves. Our legal team is actively investigating this incident and is prepared to offer a free, no-obligation case review to help affected individuals understand their rights and potential legal options. This is attorney advertising and does not create an attorney-client relationship.
Source: Indiana Attorney General breach notification record
If you were affected
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.
Did you receive a letter from Sonoma Underground Services Inc?
A case review is free and confidential. Tell us about your letter and we will explain your options.