Clicking the button below will walk you through your first steps in C2C CTF 2021 Journey!

If you are currently not logged in to this site, you will be asked automatically to login/sign up before redirected to
C2C CTF 2021 application form.


Please notice:
1. prior to filling up the application form please verify that you've completed the sign-up process, by confirming the subscription email (see a sample below) that was sent to you. check spam/junk folder if you don't get it.

double opt in.JPG

2. please clear the cache and cookies, if you deal with a problem concerning submitting the application form


Students should be enrolled in University courses at UG PG PhD level.


Applications will be considered from universities that are based in the UK, USA, Japan, Israel, France and Australia.

Selection Criteria

The International C2C Committee will select up to 500 students from received applications to participate in the qualifiers. after passing the qualifiers, students will be organized in teams of five students from different universities to encourage international academic collaboration. 


We aim to select competitors from a broad range of backgrounds, nationalities, languages, genders, experiences and cyber security skills.

We seek motivated and resourceful participants who enjoy a tough intellectual challenge in a cooperative international context. We are not merely looking at experts who have won other hacking competitions before.