Mercadien PC Reports Data Security Incident to South Carolina AG

Mercadien PC Certified Public Accountants officially reported a data security incident to the South Carolina Attorney General's office on February 23, 2026. This public filing confirms that the accounting firm experienced an event where unauthorized parties may have accessed its systems. The firm is currently investigating the full scope and impact of this incident.

The report does not specify the exact nature of the breach or the precise types of personal information that may have been compromised. However, given Mercadien PC's business operations, the firm routinely handles sensitive data as part of its accounting, tax, and financial consulting services.

If you received a data breach notification letter directly from Mercadien PC, it means their internal investigation identified your personal information as potentially involved in this security event. These notices are sent to inform you about the incident and recommend steps to help safeguard your identity and financial well-being.

It is advisable to remain vigilant for any unusual activity across your personal accounts. Regularly review financial statements and credit reports for transactions you do not recognize. Report any suspicious activity immediately to your financial institutions.

Consider placing a fraud alert or security freeze on your credit files with the major credit bureaus (Equifax, Experian, and TransUnion). This can help prevent unauthorized individuals from opening new accounts in your name. Be cautious of unsolicited communications, especially those asking for personal details. Unauthorized parties may attempt to use compromised information for phishing scams or identity theft. Always verify the legitimacy of requests for personal data.