Posted On April 10, 2025 Consumer Privacy & Data Breaches
April 10 – The Eisner Advisory Group data breach lawyers at Console & Associates, P.C are investigating the data breach that was reported after the company was targeted in a recent cyber security attack. The EisnerAmper data breach resulted in the exposure of sensitive personal information of certain individuals being compromised, including names, addresses, Social Security numbers, driver’s license numbers, passport numbers, financial account information, and medical data.
According to the Montana Attorney General’s office filings, Eisner Advisory Group reported a data breach after they were targeted in a recent cyber security attack that allowed unauthorized access to their computer network.
On April 8, 2025, EisnerAmper sent out data breach letters to those individuals whose information was affected by the breach. These notifications were issued after the company completed a comprehensive investigation into the security incident that occurred between September 4, 2023, and September 23, 2023.
The investigation revealed that an unauthorized party gained access to portions of EisnerAmper’s network during this three-week period. The compromised systems contained files with confidential consumer information. Following the discovery of suspicious activity in September 2023, EisnerAmper launched an investigation to determine the scope and impact of the breach.
After a thorough review process that concluded in February 2025, the company identified that the exposed information potentially included:
The specific data exposed varies by individual, with affected persons receiving personalized notifications detailing which of their information was compromised.
Eisner Advisory Group LLC, operating as EisnerAmper LLP, is a comprehensive accounting and advisory firm headquartered in New York City. The organization provides a wide range of professional services including audit, tax, advisory, and specialized consulting across multiple industries. With offices throughout the United States and international locations, EisnerAmper serves a diverse client base including corporations, non-profit organizations, and high-net-worth individuals.
The firm specializes in sectors such as financial services, real estate, healthcare, and technology, offering tailored solutions to meet specific industry requirements. With approximately 4,000 employees, EisnerAmper generates an estimated annual revenue of $472 million. The company has built its practice on providing technical expertise across accounting disciplines while maintaining a significant presence in the professional services sector.
Our data breach lawyers are eager to speak to victims of the Eisner Advisory Group data breach to determine what damages they sustained and what compensation may be available to them. If you recently received a NOTICE OF DATA BREACH from Eisner Advisory Group and would like a free consultation, contact the Console & Associates, P.C. law firm at (866) 778-5500 to discuss your legal options, or submit a confidential contact form.
