What it does
Hacker101 provides a free web-security class with video lessons, guides, resources and capture-the-flag levels.
A learner can move from a web-security explanation into a CTF level to check whether the idea is usable. Hacker101 presents both learning material and practice, making it a focused resource for programmers or security learners interested in web vulnerabilities. Follow the class material when a challenge exposes a gap rather than treating completion alone as the learning goal.
Sources
- Home | Hacker101 (Oct 26, 2026)