Before you can authenticate someone, you must first establish their identity through a process called identity proofing. In this episode, we cover how identity proofing works—from in-person validation and biometric capture to document verification and knowledge-based authentication. We explain how organizations perform registration, bind credentials, and manage onboarding securely. These processes form the foundation of digital identity and trust. Whether you're issuing smart cards for physical access or provisioning accounts for a cloud service, CISSPs must understand the lifecycle of identity creation and assurance.