Explore the evolution of cybersecurity principles in this keynote conference talk that examines how foundational security rules have adapted over time. Analyze which traditional cybersecurity guidelines from the 2000s remain relevant today, such as "your users are the weakest link," while identifying outdated practices like monthly password changes that have led organizations astray. Discover how cybersecurity rules reflect the technological landscape of their era and learn what new principles will be essential for navigating future security challenges. Gain insights from HD Moore, Founder of runZero, as he provides a comprehensive retrospective on cybersecurity doctrine and offers forward-looking guidance for building resilient security frameworks in an ever-changing threat environment.