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Mariah P. Leffingwell

Mariah Leffingwell is admitted to practice in Maryland. She is not currently admitted in New York.

Mariah focuses her practice on a broad range of domestic and international maritime related matters including commercial negotiations and dispute resolution involving charter parties, service contracts, and other agreements. Mariah works regularly on matters involving the Federal Maritime Commission (FMC), the Maritime Administration (MARAD), and the U.S. Coast Guard, with a unique perspective on matters involving cybersecurity and privacy related to information technology (IT) and operational technology (OT) systems.

Mariah has assisted in several state, federal, and international investigations related to cybersecurity and privacy regulation. She has worked with several companies in conducting risk assessments and tabletop exercises to promote cybersecurity preparedness. She also has experience with ransomware incidents involving the SDN list for the Office of Foreign Asset and Controls (OFAC). Mariah helped companies navigate compliance issues with evolving law related to privacy and data security including, the European Union (EU) General Data Protection Regulation (GDPR), California Consumer Privacy Act (CCPA), the California Privacy Rights Act (CPRA), Health Insurance Portability and Accountability Act (HIPAA) and Health Information Technology for Ecnomic and Clinical Health Act (HITECH), the Children’s Online Privacy Protection Act (COPPA), and others.

Prior to law school, Mariah earned a bachelor of arts at St. Mary’s College of Maryland, while competing on the Varsity Sailing Team. Mariah competed nationally for four years, sailed in two national championships, and received All-America honors for two consecutive years. Mariah has spent hundreds of hours, both inshore and offshore, on various types of vessels. In addition to being a competitive sailor, Mariah has extensive experience coaching sailors of all ages and experience levels.

Prior to joining the firm, Mariah was an associate attorney at an international law firm.

Through this role, Mariah advised clients internationally and domestically, across multiple industries on cybersecurity, data protection and privacy, and information security. She worked with international and federal regulators in response to investigations and formal inquiries. She provided counsel in reponse to active data breaches and security incidents, including ransomware incidents involving significant business interuption, crisis communications, threat actor negotations, forensic investigations, and more.

While obtaining her LLM at Tulane University School of Law, Mariah served as the Maritime Law Fellow at The Maritime Law Center. Mariah focused her research on issues related to autonomous vessels and cybersecurity in both the maritime and offshore wind industries. 

  • CALI Excellence for the Future Award, Marine Insurance I, 2020
  • Judge John R. Brown Admiralty Moot Court Competition, 2018
  • US Sailing Small Boat Instructor Certification
  • Maritime Law Association
  • American Bar Association
  • Experience coaching in collegiate sailing
  • “Law Firm Hacks: The Ethical and Other Implications of a Data Security Incident at Your Firm,” American Bar Association: TIPS & YLD Section Conference, Spring 2023.
  • “Navigating Cybersecurity Preparedness - Incident Response in the Maritime Industry,” American Bar Association, Tort Trial and Insurance Practice Section - Admiralty and Maritime Law, Spring 2022.
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