about

Making security education accessible.

Code Review Lab is a platform dedicated to helping developers and security engineers learn and practice secure coding through hands-on challenges. Our mission is to make security education accessible, engaging, and practical for professionals of all skill levels.

We believe that the best way to learn security is by doing. Our platform provides real-world scenarios where you can identify, exploit, and fix security vulnerabilities across different platforms and programming languages.

Hands-on Learning

Practice with real-world vulnerabilities in a safe, controlled environment. Each challenge teaches specific security concepts and best practices.

Multiple Platforms

From web apps to mobile and native software, our challenges cover a wide range of platforms and technologies.

Many Languages

Java, Python, JavaScript, TypeScript, Go, Rust, Kotlin, Swift, Solidity, and more.

Track & Share

Monitor your progress with points and completion rates. Share results with your team and improve together.

01how it works

Pick a challenge

Filter by language, platform, or vulnerability class. Pick one that matches your level.

Review the code

4-6 short files. Skim, then audit. The defect is on a single line.

Click the line

No multiple choice. You point at the bug and submit. Right or wrong, you get an explanation.

Ready to start?

Join our community of developers and security engineers.

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