SECCON CTF hosts two types of finals with the aim of organizing world-class CTF competitions and fostering CTF players in Japan: the International Finals, where top-ranking international teams from the qualifier compete, and the Domestic Finals, where top-ranking domestic teams face off. Following last year, we are once again inviting user-organized CTF events to join as qualifying contests of SECCON CTF. These qualifying contests serve as seed events, and their winners will earn a spot in the SECCON CTF Finals.

If you have an interest in this, please read the following requirements.

Requirements for running the qualifying event

1. (International Finals) Qualifying contests must be open to all players.
2. (Domestic Finals) Only Japanese residents can participate in your contest, or your contest must have a division for Japanese residents.
3. Players can participate in the contest free of charge.
4. The contest must end by December 31 2025.
5. You must have organized a competition previously.
6. You are required to submit the report of the contest after it is finished.
7. Agreement with SECCON's Code of Conduct (https://www.seccon.jp/14/seccon/code-of-conduct.html)
   
   

Number of acceptances

International Finals: 1
Domestic Finals: 1
The winner of each competition can participate in SECCON CTF 14 Finals.

Schedule

Proposal submission deadline: August 31st (in your time zone)
Notification: Around September 8th
SECCON CTF 14 Finals: February 28th - March 1, 2026

Proposal

Please answer in English or Japanese, and send it to info2025@seccon.jp

1. Please tell us about your organization.
2. What is the name of your contest?
3. How will the contest be conducted?
   1. Date, location, and duration
   2. Who will participate in the contest?
4. How was last year's contest?
   1. Date, location, and duration
   2. How many teams have scored points?
   3. Pick 2 challenges from your previous contest and provide a description for each.
5. Please attach all or related sections of the contest's rules to check prohibited activities and how to handle them.
6. Please tell us what a good CTF is and how your CTF makes efforts for it.
   
   
   Contact: info2025@seccon.jp