Marcus Christian is a co-leader of the Washington DC Litigation & Dispute Resolution practice and co- leader of Global Cyber Incident Response. He is also a member of the Cybersecurity & Data Privacy, White Collar Defense & Compliance, National Security, and Government Contracts practices. Since joining Mayer Brown in 2013, Marcus has represented clients in matters involving data security planning, board governance of cybersecurity, cyber fraud, data breach response, and congressional investigations, among others.

Marcus is a recognized leader in cybersecurity. He has been named to Cybersecurity Docket's 'Incident Response30', recognizing 30 of the 'best and brightest data breach response lawyers in the business' three times. The publication also noted that those recognized 'have established themselves as the 'first call' for companies hit with a cyber attack or other data security incident'. Marcus was also named to the Washingtonian’s Top Lawyer list in 2018 and 2019.