Build Expertise in Advanced Web Hacking and Security Code Review

Learn through real-world CVEs, vulnerable code, and hands-on exploitation.
Understand how to uncover complex vulnerabilities in source code and how to exploit them.

🧠 600+ hands-on labs built around real-world vulnerabilities and exploitation patterns

🎥 700+ expert-led deep-dive videos that explain the bug, the exploit, and the fix

🔖 In-depth code review content across languages and frameworks

😊 Expert support that helps you progress without spoiling the learning

> UNLOCK PRO ACCESS

Start with our free exercises, then go PRO for deeper labs, detailed video walkthroughs, and more advanced content on exploitation techniques and security code review.

Get Started For Free!

Need deeper training for your team?
See how PentesterLab Enterprise helps AppSec, pentest, and red teams build stronger web hacking and code review expertise.

Live Web Security Code Review and Advanced Web Hacking Training

Join live cohort-based training in advanced web hacking and security code review, open to individual practitioners and teams. Need something private for your organisation? We can deliver the same content or tailor it to your team's needs.

> VIEW UPCOMING SESSIONS

How PentesterLab Goes Deeper

PentesterLab is built for people who want more than surface-level labs. The platform is designed to help you understand how vulnerabilities work, how to find them in code, and how to exploit them with precision.

🔍 Learning Through Manual Exploitation

Our labs require you to manually exploit each vulnerability so you understand both the root cause and the attacker workflow, not just the payload that happens to work.

🛠️ Writing Your Own Tooling

Off-the-shelf tools only find what they were designed to find. Writing your own tooling helps you stay in control, automate more of your workflow, and keep a deep understanding of what is actually happening.

📖 Finding Vulnerabilities in Source Code

Learn to review source code and patches, and spot subtle implementation bugs that scanners, checklists, and cheat sheets often miss.

📼 Detailed Video Walkthroughs

Our labs are paired with detailed video walkthroughs that explain the vulnerability, the exploit, and the remediation, so you understand what is happening rather than just replaying steps.

Real Vulnerabilities

Our exercises are built from vulnerabilities found in real systems. The issues are not emulated, so you learn from realistic behavior, realistic code paths, and realistic exploitation constraints.> LEARN FROM REAL BUGS

Certificates of Completion

Our online exercises are grouped into meaningful badges and certificates of completion, making it easier to demonstrate focused progress in areas like Unix, interception, authentication, and code review.> UNLOCK YOUR NEXT BADGE

Get Unstuck Without Spoiling the Learning

When you hit a wall, PentesterLab helps you move forward without taking away the chance to reason through the problem yourself. The goal is not just to finish the lab, but to deepen your understanding and sharpen your instincts.

In-Depth Code Review Training

Spotting vulnerabilities in source code takes practice. Our code review content shows you how to review real examples across languages and frameworks, with videos that explain the vulnerable pattern, the exploit path, and the secure fix.

Build Skills That Compound

Each exercise adds to the last. Over time, you build stronger instincts for exploitation and code review, creating the kind of compounding knowledge that matters on real assessments and real codebases.

What our PRO members are saying:

“Working in a high-tech, fast-paced environment like Elastic, where I handle secure code reviews and analyze bug bounty reports from some of the world’s top hackers, has been both exhilarating and humbling. I often felt like an impostor-realizing just how much there is to know about vulnerabilities and how little time there is to master them.
That changed when I joined PentesterLab Pro. The hands-on labs and structured approach gave me the solid foundation I was missing. Today, not only am I growing technically, but I’m also reviewing advanced reports with far more confidence. PentesterLab Pro has been a game-changer in both my learning and professional growth.”Rodrigo SilvaProduct Security Engineer at Elastic

“I consider PentesterLab to be a great resource for learning about web application security and ways how it can be subverted. Even though the exercises usually don’t take much time to complete they can teach a lot. I can’t but recommend it, especially to any aspiring junior penetration testers out there.”JAN KOPRIVACSIRT Team Lead

“PentesterLab is an awesome resource to get hands-on, especially for newbies in web penetration testing or pentesting in general. It gives insights to possible web security flaws, their behavior and approaches that can be taken to exploit them. More of, it does help in developing a hacker-like mindset. Kudos & Thanks to PentesterLab!!”SAURABH NIGAMSecurity Engineer

“The exercises and course content provided by PentesterLab has allowed for me to continually excel in bug bounties and penetration testing in my career by ensuring that I am well aware of the techniques, methods and attack vectors that any good pentester should know. As PentesterLab Pro does not require you to set up VMs, more time has been spent on learning and applying rather than simply setting up labs or vulnerable VMs. The return received from subscribing to PentesterLab has been far greater than the little investment that I have put in.”SHUBHAM SHAHSenior Security Analyst and Bug Bounty hunter