What is a CTF?

Capture the Flag (CTF) in computer security is an exercise in which “flags” are secretly hidden in purposefully-vulnerable programs or websites. Competitors steal flags either from other competitors (attack/defense-style CTFs) or from the organizers (jeopardy-style challenges).[1][2] Several variations exist, including hiding flags in hardware devices. Competitions exist both online and in-person, and can be advanced or entry-level. The game is based on the traditional outdoor sport of the same name. >source

What does CCTF mean?

Crypto Currency (is) The Flag and sometimes Crypto CTF (note that there is also a cryptography CTF with that name, so our main brand is CCTF).

Can I play as a beginner?

Yes. Read our guides for help.

Do I need to share my name if I want to play?


How can I contact you?

contact /at/ cryptoctf.org