Cybersecurity Fundamentals
Think like an attacker, work like a defender — 6 levels, ~50 hours, 100% free.
- The Security Mindset + Linux for Security (~8h) — You think in terms of assets, threats, and trust boundaries — and you can move around a Linux box from the command line without reaching for a GUI.
- Networking for Security (~8h) — You understand how packets move across a network, and you can read a live capture in Wireshark to see exactly what a connection is really doing.
- Web Security & the OWASP Top 10 (~12h) — You can find, exploit, and — more importantly — explain how to fix the most common web vulnerabilities, all against legal training targets.
- CTFs — Prove It in Capture-the-Flag (~10h) — You can drop into an unfamiliar challenge, work it methodically, and capture flags across web, crypto, forensics, and reversing categories.
- Blue-Team Basics: Detection & Defense (~8h) — You can read logs like an analyst, recognize the shape of an attack in the noise, and think about defense in depth instead of just poking holes.
- Responsible Disclosure & the Profession (~4h) — You know how to report a vulnerability legally and ethically, and you have a clear-eyed, unromantic view of what a security career actually pays and demands early on.
Capstone assignments: Security audit of your own deployed project · 20 PortSwigger labs, solved and patterned · OWASP Juice Shop: 10 challenges as professional findings
After this course: Certified in Cybersecurity (CC) · Learning path completion certificates · PicoCTF standing (portfolio proof) · SOC Analyst roles · Security internships · CTF team recruitment · Bug bounty programs · Bugcrowd programs & Bug Bounty University
Continue with: Python & Automation
All free courses: Full-Stack Web Development · AI Engineering with Claude · Digital Marketing for Builders · Python & Automation · Git & GitHub · Freelancing for Developers · TypeScript & Modern Frontend · DSA & Interview Prep · SQL & Data Analysis · DevOps & Deployment · UI/UX Design with Figma · Personal Branding & Content for Builders