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MonitoringMarylandFiled March 17, 2025

Understanding your Mark Thomas data breach notification letter

If a Mark Thomas 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

Maryland-based firm Mark Thomas filed a report on March 17, 2025, detailing a cybersecurity incident that compromised a range of sensitive client data. The breach exposed personal and financial records, including Social Security Numbers and Legal Correspondence, posing significant risks to affected individuals whose information is now vulnerable.

Information the filing reports as involved

  • Full Name
  • Social Security Number
  • Date of Birth
  • Home Address
  • Financial Account Details
  • Tax Return Information
  • Legal Correspondence and Case Files
  • Direct Deposit Information

What to do after the letter

  1. Confirm the notice is genuine

    A legitimate Mark Thomas notice references the specific incident reported to the Maryland 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 Mark Thomas incident against the filing reported to the Maryland Attorney General. This registry summarizes what was filed; it does not provide legal advice.

This page summarizes a data breach reported to the Maryland Attorney General for informational purposes. DataBreachCaseFile.com is a neutral reference registry and does not provide legal advice.

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