Explore a comprehensive keynote address on the evolving landscape of cybersecurity threats and defensive strategies. Delve into the history of viruses, the economics of cybercrime, and the shift from prevention to detection and containment. Learn about the intrusion kill chain, the roles of both defenders and attackers, and the importance of understanding your adversaries. Gain insights on balancing technical and management aspects of cybersecurity, overcoming imposter syndrome, and the value of helping others in the field. Examine real-world examples and practical tactics for navigating the complex world of modern digital threats, emphasizing the reality that determined adversaries can always find a way in.