Let's protect the web together

Defend the Web is an interactive security platform where you can learn and challenge your skills. Try and complete all of our 60+ hacking levels. Learn from our series of articles covering all aspects of security. Articles will guide you through the essentials to get started. As you progress more complex topics will be introduced to build up your knowledge.


Work your way through our 80+ articles. Explore a wide range of security topics with easy to read articles and interactive challenges. Each topic will be analyzed and explored in detail in manageable and easy to understand chunks.


Take our challenges to test your knowledge against real world scenarios. Challenges can be taken at anytime and will put everything you have learnt to the test. Our 60+ challenges have been completed over 2.9 million times so you are in good hands if you get stuck.


Join the vibrant community of hackers, developers and security experts and share your knowledge and learn from others. Give and receive hints and tips with the community through our discussion boards. Find new areas of interest both on and off topic.


Keep track of all your activity, racking up points in the challenges and earning medals. Connect with over 800 thousand members and see how you rank up.

Top Articles

The TSA Master Key Leak: A Gateway to the World of 3D Printed Lock Picking

Introduction Lock picking has entered the digital age. 3D printing, has made creating copies of keys alarmingly easy. The 2014 TSA master key leak is a prime example of this. This article explores the incident, how 3D printing can replicate...

Using John The Ripper for Password Cracking

During your work in CTFs and information security, you may come across ... Read more

Introduction to Python

Python is a high-level, interpreted programming language that is widely used... Read more