Episode 37: Secure Design Principles: Defense in Depth, Least Privilege

Designing secure systems isn’t just about applying tools—it’s about embedding principles. This episode introduces two foundational security design concepts: defense in depth and least privilege. Defense in depth layers multiple controls to prevent, detect, and contain threats, while least privilege ensures users and systems operate with the minimum access necessary. We explain how these principles apply to networks, applications, and user environments, and how they reduce risk from both internal and external threats. Understanding and applying these design principles is critical for both the CISSP exam and real-world implementation.