Recognized in Best Lawyers since 2024 
Mary T. Costigan is a principal in the Berkeley Heights, New Jersey, office of Jackson Lewis P.C. She holds a Certified Information Privacy Professional/US designation from the International Association of Privacy Professionals (iapp).
Mary advises multinational, national, and regional companies on emerging privacy and cybersecurity issues, including the broad and growing array of mandates, best practices, and preventive safeguards. In particular, she focuses on advising and assisting clients in matters relating to compliance with the General Data Protection Regulation (GDPR) and U.S. privacy and data security standards such as HIPAA/HITECH. She also assists clients with data breach preparation and response, biometric data collection policies, vendor security assessments, and data security agreements, including business associate agreements.
Mary started her career as a litigation associate in private practice and worked as a senior litigator and advisor to the Massachusetts Department of Revenue in its Boston and New York City offices. Prior to joining Jackson Lewis, she was a global privacy manager at KPMG where she advised internal stakeholders and project teams on global data protection and privacy matters, with a concentration on software applications.
