Step-by-step web security exercises with instant feedback and clear explanations.
December 20, 2025
PentesterLab offers practical web security exercises designed for progressive learning. Starting from basic vulnerabilities and advancing to complex exploitation chains, each exercise includes detailed explanations, hints when needed, and instant verification of solutions. The free tier includes numerous exercises covering SQL injection, XSS, file inclusion, and more. The platform is known for its clear, educational approach and is excellent for building foundational penetration testing skills.