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
Mark Thomas appears to be a professional legal services firm, as indicated by the naming convention typical of private law practices. Such firms routinely collect and store sensitive client information, including personal identification, financial records, and confidential case-related documentation necessary for legal representation. This data breach was officially reported to the Maryland Attorney General in 2025, confirming that the security of firm-held information was compromised. If you have received a formal data breach notification letter from the firm, it indicates that your personal information may have been among the data accessed or acquired by an unauthorized party. We recommend reviewing the letter carefully to understand the specific scope of the incident and the identity monitoring services being offered to those affected.
What to do after the letter
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.
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.
Find out whether you have a claim
Whether the Mark Thomas breach gives you a legal claim depends on the facts. A free, no-obligation case review will tell you where you stand — there is no cost and no commitment to find out.
This page summarizes a data breach reported to the Maryland Attorney General for informational purposes and is attorney advertising. It does not create an attorney-client relationship. DataBreachLegalTeam.com does not provide legal advice through this page.