People are at the heart of every security program—and also one of its greatest vulnerabilities. In this episode, we examine personnel security controls that mitigate human-based risks. Topics include background checks, onboarding protocols, security training, acceptable use policies, and ongoing behavior monitoring. We also explore separation of duties, job rotation, and least privilege principles that reduce fraud and error. CISSPs must be able to design and enforce personnel policies that protect the organization while supporting a strong security culture and clear accountability.