John Leo Jr
Managing Director - Threat and Vulnerability Management Leader, EY
John Leo Jr is a Managing Director in EY’s Cybersecurity Practice with over 20 years of experience in cybersecurity, specializing in incident response and security operations. He leads EY’s Cybersecurity Threat and Vulnerability Management capability and has advised clients through numerous incidents, including APTs, ransomware, business email compromises, denial of service attacks, and cyber fraud. Before EY, John was the Global Head of Cyber Threat Response at UBS, overseeing Incident Response, Threat Hunting, Cyber Readiness, and the Insider Risk program. He also served as a Supervisory Special Agent with the FBI, managing investigations into criminal and state-sponsored cyber intrusions.