Romaine Marshall helps clients protect their data, businesses and reputations from cybersecurity and data privacy incidents. 

As a cybersecurity and data privacy lawyer, he has represented clients in response to hundreds of incidents involving data breaches, ransomware, malware attacks, security misconfigurations, wire fraud, software vulnerabilities, social engineering and other exploits, and in resulting litigation and regulatory investigations. 

As part of his practice, Romaine works with clients to develop industry-specific cybersecurity programs and conduct risk assessments, and actively collaborates with technical consultants to map compliance with industry standards such as the National Institute of Standards and Technology (NIST) Cybersecurity and Privacy Frameworks.

Romaine is also an experienced business litigator and trial lawyer. He has served as lead counsel in multiple jury and bench trials in business disputes including claims for breach of contract, breach of fiduciary duty, unfair competition, trade secret misappropriation, negligence and fraud.

As a frequent author and speaker, Romaine develops and directs workshops and training events analyzing digital transformation and emerging technologies such as blockchain, artificial intelligence, the Internet of Things, and their intersections with cybersecurity, data privacy and other business laws.

He is a member of the Utah Bar Association’s Innovation in Law Practice Committee and the National Asian Pacific American Bar Association’s Data Security and Privacy Committee.


Prior to joining Armstrong Teasdale, Romaine was a partner at regional law firms headquartered in Denver and Portland.  After law school he was a law clerk for Judge J. Thomas Greene of the U.S. District Court for the District of Utah.


  • Brigham Young University, J. Reuben Clark Law School  (J.D., 2001)
  • Waikato University School of Law, New Zealand  (Visiting Law Student, 2000)
  • Brigham Young University  (B.S., 1998)


  • Utah

Professional Activities

  • Utah Bar Association, Innovation in Law Practice Committee (2019-present)
  • National Asian Pacific American Bar Association, Data Security and Privacy Committee (2019-present)
  • Utah Bar Association Office of Professional Conduct, Ethics and Disciplinary Committee (2015–2018)


  • Mountain States Super Lawyers® Rising Stars, Business Litigation (2008, 2011)
  • The Best Lawyers in America®, Commercial Litigation (2022)
  • Utah Business Legal Elite (2005–2009), Civil Litigation (2015–2021)
  • Pro Bono Award, Utah Federal Bar Association (2009)


  • Maori
Contact Us
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  • Philadelphia, PA
  • Princeton, NJ
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  • St. Louis, MO
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