Mercadien P.C., CPAs Reports Data Security Incident to NH Officials

Mercadien P.C., CPAs, a prominent accounting and business advisory firm, filed a data breach notification with the New Hampshire Attorney General's office on July 20, 2026. This report confirms a security incident where personal information managed by the firm may have been accessed without authorization. The exact date the incident occurred is not yet known, as the matter remains under investigation.

The official filing from Mercadien P.C., CPAs does not specify the precise types of information involved in this breach, nor does it state how many individuals were impacted. As a firm that provides extensive financial, tax, and consulting services, Mercadien P.C., CPAs routinely handles a wide array of sensitive client and employee data.

Because the specific data types affected are not disclosed, individuals who receive a notification should consider the potential for various forms of misuse. It is important to treat any compromise of your data with caution, regardless of the explicit details provided.

To help mitigate potential risks, it is advisable to closely monitor all your financial accounts for any unusual activity. This includes reviewing bank statements, credit card statements, and other financial records for unauthorized transactions. Promptly report any suspicious activity to your financial institutions.

Additionally, regularly obtain and review your credit reports from the three major credit bureaus (Equifax, Experian, and TransUnion) for any unfamiliar accounts or inquiries. Placing a fraud alert or a security freeze on your credit files can provide an extra layer of protection by restricting access to your credit history.

These details are based on the public notification submitted by Mercadien P.C., CPAs to the New Hampshire Attorney General. DataBreachSearch.com provides this information directly from official sources to assist individuals in understanding verified breach reports.