Data Breach Law Group Investigates the Mercadien PC Certified Public Accountants Data Breach
By Data Breach Law Group | Posted on February 23, 2026 · South Carolina
Miami, FL — Data Breach Law Group is investigating a data breach involving Mercadien PC Certified Public Accountants, reported to the South Carolina Attorney General on February 23, 2026. The firm is reviewing whether affected individuals have legal claims arising from the incident.
Mercadien PC Certified Public Accountants is a professional services firm specializing in accounting, tax preparation, and financial consulting. Given the nature of their business, the firm routinely collects and maintains highly sensitive personal and financial data, including tax filings, Social Security numbers, and detailed banking information required for audit and advisory services. In 2026, the company officially reported a data security incident to the South Carolina Attorney General, indicating that unauthorized parties may have accessed their systems. If you received a data breach notification letter from Mercadien, it means your personal information was identified as potentially exposed during this event. This notice serves to inform you of the incident and provides guidance on the steps you should take to protect your identity and financial assets.
If you were affected
Stay alert to targeted scams
Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.
Keep your notification letter
Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.
Did you receive a letter from Mercadien PC Certified Public Accountants?
A case review is free and confidential. Tell us about your letter and we will explain your options.