42
TOPICS
Professional cybersecurity academy
Master cybersecurity skills with a world-class curriculum
Learn across 42 structured topics and 742 lessons with hands-on labs, quizzes, and real-world security scenarios — completely free to start, no login required.
144
MODULES
742
LESSONS
Free
ALWAYS
All cybersecurity topics
Browse the full 42-topic curriculum — defensive, offensive, and specialty paths.
BEGINNER
Cybersecurity Fundamentals
Defensive foundations from hacker mindset to incident response
Defensive Security1,000 XP
BEGINNER
Linux Fundamentals
Shell, logs, permissions, networking, and automation
Offensive & Defensive1,200 XP
BEGINNER
Networking Basics
OSI, IP addressing, protocols, ports, LAN essentials, and troubleshooting
Offensive & Defensive1,100 XP
BEGINNER
Python for Security
Script sockets, scanners, parsers, and automation—safely and ethically
Offensive & Defensive1,000 XP
INTERMEDIATE
Ethical Hacking (CEH v13)
Recon, scanning, and exploitation
Offensive Security1,200 XP
INTERMEDIATE
OSINT
Open-source intelligence gathering
Offensive & Defensive700 XP
ADVANCED
Bug Bounty Hunting
Recon, bug finding, and paid reports
Offensive Security900 XP
PROFESSIONAL
SOC Level 1
SIEM, alert triage, and detection
Defensive Security900 XP
Built for serious learners
No login required
Start learning instantly. Browse every topic and lesson without creating an account.
Structured curriculum
From fundamentals to advanced offensive security and certification prep across 42 professional topics.
Hands-on learning
Interactive quizzes, knowledge checks, and encryption labs reinforce every concept you study.
Progress & leaderboard
Log in to earn XP, complete modules, and compete on the global Cyberlium leaderboard.
Frequently asked questions
Is Cyberlium really free?
Yes. All lessons are free to read and learn. Sign in to save progress, earn XP, and appear on the leaderboard.
Do I need experience to start?
No. Begin with Cybersecurity Fundamentals, Linux, and Networking before moving to ethical hacking topics.
Does this help with CEH or OSCP?
Cyberlium includes ethical hacking, penetration testing, and certification-aligned study paths to support exam prep.
Free Cybersecurity & Ethical Hacking Courses Online
Cyberlium is a professional cybersecurity learning platform for beginners, students, and security professionals worldwide. Learn network security, Linux administration, cryptography, malware analysis, SOC operations, cloud security, bug bounty hunting, penetration testing, digital forensics, and certification preparation — with structured modules, interactive quizzes, and hands-on labs. Whether you are starting your first security role or preparing for CEH, OSCP, or Security+, Cyberlium gives you a clear path from fundamentals to advanced offensive and defensive skills.
Cybersecurity Fundamentals
- Introduction to Cybersecurity
- The CIA Triad
- Access Control & Identity
- Encryption & Data Security
- +3 more modules
Linux Fundamentals
- Linux Introduction
- Basic Commands
- Users & Permissions
- Networking Commands
- +2 more modules
Networking Basics
- OSI & TCP/IP Model
- IP Addressing
- Protocols
- Transport & Ports
- +2 more modules
Python for Security
- Python Basics for Hackers
- Networking with Python
- Automation & Tools
- Safe Scripting Habits
Ethical Hacking (CEH v13)
- Hacking Methodology
- Reconnaissance
- Scanning & Enumeration
- Exploitation Basics
- +1 more modules
Malware Analysis
- Malware Types
- Static Analysis
- Dynamic Analysis
SOC Level 1
- SOC Fundamentals
- SIEM & Log Analysis
- Alert Triage
- Common Attacks in SOC
Cloud Security
- AWS Security
- Azure Security
- Container & K8s Security
Bug Bounty Hunting
- Getting Started
- Recon for Bug Bounty
- Finding Bugs
- Writing Reports
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