Phase 1: Cybersecurity Fundamentals
Every expert was once a beginner. This phase gives you the mental models, vocabulary, and intuition you need before anything else. By the end, you'll understand how attackers think, what defenders protect, and why cryptography is the cornerstone of it all.
What is Cybersecurity?
The big picture — what we're protecting, who we're protecting it from, and why it matters more than ever in 2025.
Start here →The CIA Triad
Confidentiality, Integrity, Availability — the three pillars every security decision is measured against.
Learn the CIA triad →Types of Cyber Threats & Attacks
Malware, phishing, man-in-the-middle, ransomware, SQL injection — learn what attackers actually do.
Know your enemy →Networking Basics for Security
TCP/IP, DNS, firewalls, and ports — you can't defend a network you don't understand.
Explore networking →Authentication & Authorization
Who are you? What are you allowed to do? The difference between these two questions underpins every access control system.
Explore access control →Frequently Asked Questions
What will I learn here?
This page covers the core concepts and techniques you need to understand the topic and progress confidently to the next lesson.
How should I use this page?
Start with the overview, then follow the section links to deepen your understanding. Use the table of contents on the right to jump to specific sections.
What should I read next?
Use the navigation below to continue to the next lesson or explore related topics.