Learn by doing

Practice resources

Only practice on systems you own or have clear permission to test. These platforms provide safe, legal environments.

Live competitions

CTFtime

Find upcoming CTF events, team rankings, past challenges, and community writeups.

Vulnerable virtual machines

Download intentionally vulnerable machines to practice locally in an isolated lab.

Hands-on systems security

Practice Linux, program security, reverse engineering, exploitation, and related skills through structured challenges.

Beginner friendly

Practice past competition challenges at your own pace in the picoGym.

Linux fundamentals

Learn command-line and Linux basics through a sequence of SSH challenges.

Web security

Free learning paths and interactive labs from PortSwigger.

Guided learning

Browser-based lessons and labs with a structured beginner path.

Intermediate paths

Guided modules, skill paths, and hands-on exercises for deeper technical practice.