Robert Maddox is a member of Debevoise & Plimpton LLP’s Data Strategy & Security practice, based in London. In 2021 he was named to Global Data Review’s “40 Under 40” and is described as “a rising star” in cyber law by The Legal 500 US (2022). His practice focuses on cybersecurity incident preparation and response, internal investigations and regulatory defence. Mr. Maddox also advises on data strategy and compliance in the context of emerging technologies, including AI, and operational resilience matters.

Mr. Maddox acts for clients across a wide range of industries including financial services, private equity, media and entertainment, as well as for sovereign states and international organisations. He helps clients respond to all types of cybersecurity incidents, including APT/nation state threat actors, business email compromises, ransomware and payment skimming attacks. Mr. Maddox’s experience includes advising clients on matters involving, among others, the UK Information Commissioner’s Office, Serious Fraud Office, and Financial Conduct Authority, the U.S. Department of Justice, Securities and Exchange Commission, and National Futures Association, the Irish Data Protection Commission, New York Department of Financial Services, Gibraltar Regulatory Authority, and the Luxembourg Commission de Surveillance du Secteur Financier and Commission Nationale pour la Protection des Données. He has particular expertise leading large-scale, multi-jurisdictional incident response matters.

Mr. Maddox’s articles and views on cybersecurity-related issues have been featured in Global Data Review, Practical Law, Insurance Day, Strategic Risk, Global Reinsurance, Law360, the Drawdown and The Deal. Mr. Maddox has also delivered cybersecurity training for the Financial Times Non-Executive Director training programme.

Mr. Maddox joined Debevoise in 2013. He holds an M.A. in law from the University of Cambridge and an LL.M. (Corporate & Financial Services Law, First Class) from the National University of Singapore, where he was a Faculty Graduate Scholar. He completed the Legal Practice Course in 2011 with Distinction.

Prior to entering private practice, Mr. Maddox interned on the defence team of Thomas Lubanga Dyilo, the first individual to stand trial before the International Criminal Court in The Hague. He has also worked with the Texas Defender Service, a non-profit law firm representing indigent individuals facing capital punishment in the state of Texas.


  • College of Law, London, 2011, L.P.C.
  • National University of Singapore, 2010, LL.M.
  • University of Cambridge, 2009, B.A. (Hons)

Bar Admissions

  • Solicitor, England & Wales