Mark Ballister is a cybersecurity and enterprise risk executive with more than two decades of experience protecting organizations where the stakes extend well beyond data. His career has spanned healthcare, higher education, and financial services: sectors where a security failure can disrupt patient care, compromise research, or threaten financial stability.
Mark has served as Chief Information Security Officer across multiple industries, building and leading programs designed to safeguard sensitive information, sustain mission-critical operations, and respond effectively when incidents put organizational resilience to the test. His background includes navigating audit findings, driving corrective action plans, supporting acquisition activity, and managing crisis response. This experience has given him a grounded, practical perspective on how technology, regulation, and institutional risk come together in the real world.
Read about Mark's perspective on how Montefiore Health System is governing AI tools in a life-critical environment, including the security team's own custom model that turns architecture-review requirements into risk evaluations and the web-gateway splash page that maps shadow AI usage before any block goes live.
