Thursday 28 November 18:00 - 21:00

ThoughtWorks Ltd
76 Wardour Street

Tickets Unavailable


Science & Technology

OWASP London Chapter is pleased to announce the OWASP London CTF Tournament for Application Developers!

This event is kindly hosted and sponsored by: ThoughtWorks London

Location: ThoughtWorks, 76 Wardour Street, London, W1F 0UR

Nearest Tubes: Piccadilly Circus (6 minute walk), Leicester Square (6 minute walk), Tottenham Court Road (9 minute walk), Oxford Circus (9 minute walk)

Doors open and registration: 6:00pm

CTF start: 6:30pm (we start on time)

Expected CTF finish and Prize Giving Ceremony: 9:00pm

OWASP London Chapter is pleased to announce the OWASP London CTF Tournament for Application Developers!

CTF (Capture The Flag) is a type of computer security competition. Contestants are presented with a set of challenges and puzzles which test their creativity, technical coding skills, and problem-solving ability. The challenges usually cover a number of categories and when solved, each yields a “flag” which is submitted to a real-time scoring service. The difficulty levels are from beginner to advanced.

CTF tournaments are a great and fun way for software developers to learn a wide array of cyber security / application security skills in a safe and legal environment. Identify vulnerabilities in the source code of various systems and choose the right solution to fix the vulnerabilities.

The players will be presented with a series of vulnerable code challenges that will ask them to identify the problem, locate the insecure code, and fix the vulnerability. Hints are available (will reduce the final score).

Programming languages supported in this CTF event: Java, .NET, GoLang, Ruby, PHP, Python, Solidity(Ethereum).

IMPORTANT: Please bring your own LAPTOP and a CHARGER for it .No extra software required to be installed - play using just the web browser.

Top 3 scorers will win exciting prizes generously provided by the cyber security technology vendors.

Participation is FREE, but the number of seats is strictly limited and registration is required to attend.

Please remember to bring your own laptop!


We hope you enjoy our events, we care deeply about inclusivity and diversity so that OWASP is a comfortable and welcoming community for everyone. Please reach out to one of our chapter leaders if you have any feedback or would like to speak to us, we take these matters very seriously. You can find out more about our policies here:


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