Mercadien PC Reports Data Incident to Massachusetts AG in 2025

Mercadien PC Certified Public Accountants filed a data breach notification with the Massachusetts Attorney General's office on December 24, 2025. The company stated it is currently investigating a data security incident that may have exposed client data.

While the specific types of personal information involved were not detailed in the public filing, Mercadien PC, as an accounting and advisory firm, routinely handles highly sensitive financial and personal details for its clients. The firm's operations involve processing extensive personal information for tax returns, audits, and financial planning.

A breach at such a firm means that the information involved could be extensive. Individuals whose data was managed by Mercadien PC should be aware that their personal information may have been compromised through unauthorized access to the company's systems.

To protect themselves, individuals should remain vigilant for any suspicious activity involving their personal accounts. Consider placing fraud alerts on credit reports and regularly review financial statements. It's also wise to be cautious of unexpected communications asking for personal details.

This information is based on public disclosures made to state regulators.