PentesterLab
Hands-on labs for web security and secure code review
PentesterLab is an online training platform for web application security and security code review. It has hundreds of hands-on labs built around real-world vulnerabilities, along with videos that explain each bug and how to fix it.
Freemium · Login needed · Browser · Intermediate
About PentesterLab
You work through exercises grouped into badges and tracks, from basic web concepts up to studying real published flaws in source code. Many labs run in your browser, so you do not need to set up your own environment.
You can start with a set of free exercises after making an account. A paid PRO subscription unlocks the full catalog and the code review content. It suits developers, testers and AppSec staff who want structured practice.
On Breakpoint since 23 Oct 2026.