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See the full WorldOne Inc dba Sermo breach case facts
MonitoringIndianaFiled February 9, 2026

Understanding your WorldOne Inc dba Sermo data breach notification letter

If a WorldOne Inc dba Sermo 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

WorldOne Inc, operating as Sermo, filed a data breach report in Indiana in February 2026 after its network was compromised on March 19, 2024. This incident potentially exposed sensitive professional and financial information of its users, primarily healthcare professionals. Individuals who received a notification about this breach should review official details to understand the specific data categories affected.

Information the filing reports as involved

  • Full Name
  • Date of Birth
  • Social Security Number
  • Professional License Number
  • Financial Account Details
  • Tax Identification Number
  • Email Address
  • Professional Credentials and Verification Records

What to do after the letter

  1. Confirm the notice is genuine

    A legitimate WorldOne Inc dba Sermo 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 WorldOne Inc dba Sermo 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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