Build Expertise in Advanced Web Hacking and Security Code Review

Train on real-world CVEs and vulnerable code.
Learn to uncover complex vulnerabilities in source code, then exploit them yourself.

🧠 700+ 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 training across languages and frameworks

😊 Expert support that gets you unstuck without spoiling the answer

Start with our free exercises. Go PRO when you're ready for deeper labs, video walkthroughs, and advanced exploitation and code review content.

Get Started For Free!

Training a team?
PentesterLab Enterprise helps AppSec, pentest, and red teams build web hacking and code review expertise together.

OAuth2 Flaws• SQL Injection• XSS• CSRF• JWT Attacks• SAML Bypass• Code Review• SSRF• Deserialization• Path Traversal• SQL Injection• XSS• CSRF• JWT Attacks• OAuth2 Flaws• SAML Bypass• Code Review• SSRF• Deserialization• Path Traversal•

How PentesterLab Goes Deeper

PentesterLab is built for people who want more than surface-level labs: understand how vulnerabilities work, find them in code, and exploit them with precision.

🔍 Learning Through Manual Exploitation

Every lab requires you to exploit the vulnerability yourself, so you learn 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 keeps you in control, automates more of your workflow, and forces you to understand what is actually happening.

📖 Finding Vulnerabilities in Source Code

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

🎥 Detailed Video Walkthroughs

Each lab comes with a video that explains the vulnerability, the exploit, and the remediation, so you understand what is happening rather than just replaying steps.

Security Labs

Real Vulnerabilities

Our exercises are built from vulnerabilities found in real systems. Nothing is emulated: you work against real behavior, real code paths, and real exploitation constraints.

BROWSE EXERCISES

Progression

Certificates of Completion

Exercises are grouped into badges and certificates of completion, so you can show focused progress in areas like Unix, interception, authentication, and code review.

TRACK YOUR PROGRESS

Support

Get Unstuck Without Spoiling the Learning

When you hit a wall, we help you move forward without handing you the answer. The goal is not just to finish the lab: it is to deepen your understanding and sharpen your instincts.

Code Review

In-Depth Code Review Training

Spotting vulnerabilities in source code takes practice. You review real examples across languages and frameworks, with videos that explain the vulnerable pattern, the exploit path, and the secure fix.

Growth

Build Skills That Compound

Each exercise builds on the last. Over time, you develop stronger instincts for exploitation and code review, the kind of compounding knowledge that pays off on real assessments and real codebases.

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 a private session for your organisation? We can deliver the same content, or tailor it to your team.

VIEW UPCOMING SESSIONS

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 Silva

Product 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 Kopriva

CSIRT 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 Nigam

Security 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 Shah

Senior Security Analyst and Bug Bounty hunter

Your next vulnerability is waiting.

Get Started For Free

Free to start. $199.99/year for Pro.