Networks and Systems
Annotate the OSI model, design a segmented network, compare ports and protocols, evaluate the cloud, and harden and patch systems and IoT devices.
Cybersecurity (First Edition): Welcome!
Cybersecurity: Foundations of Defense (First Edition) 🛡️
Section titled “Cybersecurity: Foundations of Defense (First Edition) 🛡️”Every network, account and smart device around you is defended by people who understand how it works and how it can fail. In this course you will learn to think like a defender: map systems, protect data and identity, recognize attacks, secure AI, and protect the people behind every system, legally and ethically.
What You’ll Learn
Section titled “What You’ll Learn”Protecting Data and Identity
Apply the CIA triad to the three states of data, enforce least privilege, go passwordless with passkeys, and prepare for post-quantum cryptography.
Threats, Attacks, and Defenders
Analyze threat actors, build a field guide to attacks, see scripting on both sides, and follow how a SOC monitors, responds and layers its defenses.
AI and Security
Secure AI agents, analyze prompt injection, respond to deepfakes, and govern shadow AI while comparing global AI and cyber policies.
Physical Security, Law, and Citizenship
Respond to physical incidents, protect the supply chain, navigate cyber law and agreements, limit breach damage, and explore ethics and careers.
Ready to Start?
Section titled “Ready to Start?”Jump into your first chapter to begin building your foundations of defense!
👉 Chapter 1: Networks and Systems 👉 Chapter 2: Protecting Data and Identity 👉 Chapter 3: Threats, Attacks, and Defenders 👉 Chapter 4: AI and Security 👉 Chapter 5: Physical Security, Law, and Citizenship