Understanding your 3Sonoma Underground Services Inc data breach notification letter
If a 3Sonoma Underground Services Inc letter arrived in your mailbox, here is what it means, why you received it, and the free steps you can take right now.
Why you received this letter
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.
Information the filing reports 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
What to do after the letter
Confirm the notice is genuine
A legitimate 3Sonoma Underground Services Inc notice references the specific incident reported to the Indiana Attorney General and describes which categories of your information were involved. Compare the letter against the public filing before acting on any links or phone numbers it contains.
Keep the letter — it is your proof of connection
The notification letter is the document that ties your personal information to this incident. Keep the original and photograph it. If you later request a case review, this letter is the strongest evidence that you were among the affected individuals.
Protect your accounts and credit
Depending on what was exposed, consider a free credit freeze with all three bureaus, new passwords for reused credentials, and monitoring of financial statements. These steps are free and do not require you to wait for anyone's permission.
Check the record against the public filing
You can verify the 3Sonoma Underground Services Inc incident against the filing reported to the Indiana Attorney General. This registry summarizes what was filed; it does not provide legal advice.
This page summarizes a data breach reported to the Indiana Attorney General for informational purposes. DataBreachCaseFile.com is a neutral reference registry and does not provide legal advice.