Foundations of Security Controls and Cryptography

Build foundational cybersecurity skills — from the CIA triad and Zero Trust to PKI and encryption — with hands-on labs. Security controls and cryptography are the building blocks of every cybersecurity program. This course gives you the foundational knowledge to classify risks, enforce access boundaries, and implement encryption standards across enterprise environments. You'll start with core security principles — learning to categorize controls by type (preventive, detective, corrective) and category (technical, administrative, physical). You'll apply the CIA triad and AAA framework to real-world security decisions and design Zero Trust architecture models that eliminate implicit trust across network perimeters. From there, you'll explore physical security safeguards including perimeter barriers, surveillance, and access badging. You'll also learn to deploy honeypots, conduct gap analyses to identify security posture deficiencies, and implement formal change management processes. The course concludes with applied cryptography — covering symmetric and asymmetric encryption, Public Key Infrastructure (PKI) components, digital certificates, and cipher suite configurations. You'll practice steganography techniques in a hands-on lab and architect enterprise PKI strategies in a scenario-based role-play. Every module pairs video lessons with an interactive AI security mentor role-play, giving you practice applying concepts to realistic enterprise scenarios. Who this is for: Aspiring cybersecurity professionals, IT helpdesk technicians, and junior system administrators building a strong foundation in security controls, access models, and cryptography. No prior cybersecurity experience is required.