On or around December 1, 2025, Mercadien issued a data breach notification following a cybersecurity incident that occurred earlier in 2025. The organization launched an investigation and determined that an unauthorized actor accessed certain systems and may have acquired files containing sensitive personal information.
Mercadien is a New Jersey-based accounting and advisory firm that provides a full spectrum of services, including audit, tax, consulting, and wealth management. The firm, founded in 1963, serves a diverse client base across various industries.
The organization sent data breach notification letters to affected individuals and offered complimentary identity protection services.
If you received a Data Breach notification letter from Mercadien, it confirms that your information was potentially impacted.
What information is involved in the Mercadien Data Breach?
Compromised information may include:
Name
Social Security Number
Date of Birth
Financial Account Information
Tax Identification Number
Health Insurance Information
Your Personally Identifiable Information (PII) includes details that can be used to identify you. Organizations are legally obligated to safeguard this data, and failure to do so can result in statutory fines and other legal consequences. If PII is stolen, it may be exploited by criminals to commit identity fraud.
A specific category of PII is financial information, which is highly sensitive and often targeted by cybercriminals. Compromised payment card data can lead to unauthorized transactions and identity theft.
If your data has been exposed in a breach, one of the most effective steps you can take is to enroll in credit and identity monitoring services promptly.
Residents of California benefit from additional privacy protections under the California Consumer Privacy Act (CCPA), which grants enhanced rights regarding personal data. Additionally, California residents also benefit from medical privacy protections under the Confidentiality of Medical Information Act (CMIA), which specifically grants enhanced protections for confidential medical data.
If you received a NOTICE OF DATA BREACH letter from Mercadien, your personal and financial information may be at risk. This type of data can be exploited by identity thieves to commit fraud and other crimes.
Contact the Data Breach Lawyers at Emery | Reddy, PC for a Free Case Review today.