PentesterLab is an online training platform focused on web application security and penetration testing skills development. The platform provides over 600 hands-on labs featuring real-world vulnerabilities and CVEs, allowing users to practice manual exploitation techniques in live environments rather than emulated systems. The platform includes over 700 expert-led instructional videos with multilingual subtitles that guide users through vulnerability exploitation and code review processes. Content covers web security fundamentals through advanced topics, with emphasis on understanding vulnerabilities at the code and logic level. Users can progress through structured learning paths organized into badges, earning certificates of completion to demonstrate technical proficiency. The platform teaches manual exploitation techniques and encourages users to build custom tools and scripts rather than relying solely on automated security tools. PentesterLab offers both free exercises for beginners and PRO subscription access to advanced content. PRO members receive direct support from experts when encountering difficulties with exercises. The platform also provides in-person and online live training sessions focused on code review and secure coding practices. All curriculum content is created in-house to maintain consistency and technical accuracy. The platform is designed for self-paced learning, allowing users to complete exercises and review materials on their own schedule. Target users include penetration testers, application security engineers, red team members, and security professionals seeking to develop web application security skills.