This course brings together a number of Cyber-Security CTF (Capture The Flag) competitions in the one place. Each topic relates to one CTF competition and has the instructions for accessing it.

Some CTFs have flag that is the password for the next level, others have a flag that marks the level complete. Whichever the case, the idea is that you enter the flag here as well to log your achievement. 

Each question asks you to enter a short description of how you got the flag. Writing this out is important so that you can look back on it when considering a similar challenge elsewhere.