A cybersecurity Capture The Flag (CTF) competition organized by DiceGang. Format is Jeopardy-style competition running for 24 hours. Top teams will be invited to compete at DiceCTF Finals. More details and prizes to be announced. Discord server available for participants.

ZeroDays is Ireland's largest CTF. Running since 2015, it has grown to be the largest on-site, one-day CTF in the world. In 2025 over 130 teams of four competed with over 500 competitors in total. The event has three categories for Irish colleges, International teams and an Open section for any team to enter. International competitors welcome. Expect a wide range of challenges suitable for all skill levels; plenty of easy challenges for newer players and some very advanced challenges for experienced players. Thousands of euro worth of prizes including gaming consoles, tablets, lab vouchers etc. Prizes for 1st, 2nd and 3rd place in each of our Colleges, International and Open sections, as well as spot prizes throughout the day. This is an on-site event and will not be accessible to remote teams.

A Capture The Flag (CTF) cybersecurity competition hosted by Laokoon Security, IBM and CGI. 100 hackers in teams of up to four players will compete in Jeopardy format to win valuable prizes. This is the fourth edition of the event held at IBM Garage for Defense. Teams currently registered: Ashen Cypher, Chipmonks, Z3R0C0D3.

Dreamhack Invitational 2026 is a special CTF event for Dreamhack users, hosted at .HACK 2026 Conference. Top 20 competitors from the quals and top 10 rated users from Dreamhack CTF Season 7 will compete. Jeopardy format competition. Limited to individual participation only. Airplane tickets/hotel rooms are not supported but may be available in future events. Prizes to be announced.

SAS CTF is an international competition for cybersecurity experts, held as a part of the Security Analyst Summit conference. The competition consists of an online Jeopardy qualification stage and on-site Attack-Defense finals. The qualification stage will begin on May 23 at 12:00 UTC and will last for 24 hours. Top 8 teams from the qualification stage will compete for a share of the $18,000 prize pot at SAS 2026. Top 8 teams will qualify for SAS CTF 2026 Finals. Organizers will cover (for up to 5 people per team): 1st place: flights, accommodation costs and CTF conference passes; 2nd and 3rd places: accommodation costs and CTF conference passes; Rest of the teams: CTF conference passes.

SSMCTF 2026 Qualifiers is a 12-hour, beginner-friendly Jeopardy CTF organised by the Singapore Students Merger. It features a section dedicated to beginners with increased difficulty to cater to everyone from complete beginners to seasoned players. Teams may consist of up to 4 members. Categories include: Web, Pwn, Crypto, Forensics, Rev, Beginner and Misc. Top 40 participants will be invited to SSMCTF 2026 Finals in Singapore on June 13. Pre-university students are prize eligible, while open category is non-prize eligible.

POCTF is designed for learners, newcomers, and anyone exploring the world of cybersecurity and CTFs. Whether this will be your first competition or your next milestone, this contest is built to be accessible, educational, and community-driven. The Pointer Overflow CTF is organized in honor of the students and alumni of the CIS: Cybersecurity program at the University of Wisconsin-Stevens Point. The contest continues to support our mission of expanding hands-on cybersecurity education through the Center for Cybersecurity Studies and Advanced Research. Event runs from September 27, 2026 to December 6, 2026. Format: Jeopardy. Prizes include $200 for 1st Place Academic Team, $100 for 2nd Place Academic Team, $100 for 1st Place Team, $50 for 1st Place Individual, and Certificate of Participation for all contestants.

The Platypwn 2026 is an online Jeopardy CTF which offers easy challenges for beginners, but also medium and difficult challenges for advanced players. This is a Capture The Flag (CTF) competition in Jeopardy format running from November 14-15, 2026. Event runs from 09:00 UTC on Saturday to 21:00 UTC on Sunday. Prizes available - see official website for details.