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MonitoringIndianaFiled August 6, 2026

Understanding your Sonoma Underground Services Inc data breach notification letter

If a Sonoma 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

Sonoma Underground Services Inc., an Indiana-based contractor, filed a data breach report with state authorities on August 6, 2026. The incident, which occurred in December 2025, involved the exposure of sensitive personal information including Social Security Numbers and home addresses. Individuals affected should consider monitoring their financial accounts and credit reports for suspicious activity.

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

  1. Confirm the notice is genuine

    A legitimate Sonoma 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.

  2. 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.

  3. 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.

  4. Check the record against the public filing

    You can verify the Sonoma 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. DataBreachInformation.com is a neutral reference registry and does not provide legal advice.

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