3Sonoma Underground Services Inc Reports Data Breach in Indiana

3Sonoma Underground Services Inc in Indiana has reported a data breach that occurred in December 2025, with public notification in August 2026. This incident involved the exposure of personal information, prompting individuals to remain vigilant for unusual activity. The specifics of the breach type and the exact number of people affected remain undisclosed in public filings.

State: Indiana
Breach date: December 10, 2025
Reported: August 6, 2026

What may have been exposed

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

3Sonoma Underground Services Inc, based in Indiana, has officially reported a data security incident to authorities. Public filings confirm that this breach potentially exposed personal information held by the company.

The incident took place on December 10, 2025, and was subsequently reported to the public on August 6, 2026. While the exact nature of the breach, the specific types of data compromised, and the total number of individuals affected have not been detailed in available records, the company has indicated an ongoing monitoring status regarding the investigation.

When personal information is involved in a security incident, it can create risks for those whose data was exposed. These risks commonly include identity theft attempts, phishing scams, or unauthorized access to other accounts linked to the compromised data.

Individuals who believe their information may have been involved should take proactive steps. It is advisable to monitor account statements and credit reports for any suspicious activity. Consider changing passwords for online accounts, especially if they are reused across multiple services. Additionally, be cautious of unexpected communications, such as emails or calls, that request personal details.

All details regarding this case are based on public disclosures made by 3Sonoma Underground Services Inc to regulatory bodies.

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.

Source: Indiana Attorney General filing

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