CTFs, short for Capture the Flags, are a type of Computer Security competition where you hack, decrypt, reverse, and do whatever it takes to solve increasingly challenging security puzzles!

What Next?

Sign up in a team of 1–5 competitors. There will then be a list of ‘problems’ for you to solve.

On solving a problem, you should end up with a string as an answer called a ‘flag’ (hence the term ‘Capture the Flag’). You can submit this flag using the text box next to the problem description for points and fun!

Arise, go forth, and conquer!

Some text adapted from PicoCTF.