Daniel S. Marvin Partner

New York, NY

Phone: 646.870.1739 Fax: 212.804.7631 Download VCard

Daniel S. Marvin

Daniel is a partner in the New York office of Morrison Mahoney and member of the firm’s Cybersecurity, Privacy and Data Protection practice. His practice focuses on data privacy, data security and cyber-insurance matters, including advisory and litigation services relating to the development, modification and implementation of written information security plans, employee data security policies, third-party vendor contracts and related corporate governance policies.

Daniel also counsels clients in all aspects of data breach prevention, detection and mitigation, as well as regulatory compliance with international, federal and state privacy and data protection laws, including the California Consumer Privacy Act, Gramm–Leach–Bliley Act, EU General Data Protection Regulation, HIPAA, F.T.C. Act and N.Y.S. Department of Financial Services cybersecurity regulation.

In addition, Daniel assists clients in cybersecurity and privacy assessments, and conducts training for employees and management on data handling, crisis management and breach response. Daniel is a frequent speaker and author on cybersecurity and data topics and trends, and is a Member of the Rutgers University Cybersecurity Advisory Board, where he provides input and leadership designed to enhance the school’s Cybersecurity Certificate Program. 

Daniel is also a member of Morrison Mahoney’s Insurance Fraud & Forensic Investigations Group, as well as the firm’s Financial Institutions Litigation Group, and has extensive experience in the litigation of insurance and healthcare fraud actions, as well as in the representation of domestic and international financial institutions, insurance carriers, hedge funds, corporations, and individuals in litigation, mediation and arbitration matters.

Prior to joining private practice, Daniel served as an Assistant District Attorney in Bronx County, New York

Speaking Engagements


New York, NY Office

120 Broadway
Suite 1010
New York, NY 10271
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Areas of Practice

Bar Admissions

  • New York
  • New Jersey
  • United States District Court for the Southern District of New York
  • United States District Court for the Eastern District of New York
  • United States Court of Appeals for the Second Circuit


  • J.D. — Hofstra University School of Law
  • B.A. — Hofstra University

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