John Mackenzie

John Mackenzie is a cybersecurity governance and risk specialist, researcher, and author with more than 30 years’ experience across banking, financial services, critical infrastructure, and complex enterprises. He is the creator of the Black Snow framework and author of multiple companion guides examining why organisations can appear compliant yet remain structurally fragile. John has led and reviewed cyber risk, governance, and assurance across more than $350 billion in assets, working with boards, executives, and regulators to expose hidden fault lines that precede major failures. His work bridges practical governance, operational resilience, and emerging research on non-ergodic, tail-risk cyber events, challenging conventional dashboards and compliance-driven approaches to cyber risk.