CDCTF 2026

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Crimson Defense CTF 2026 will be held on Saturday, October 3rd from 10am to 10pm CDT! CDCTF is a virtual 12-hour Jeopardy-style Capture-the-Flag competition designed for collegiate-level players. All ability levels are welcome. This competition will not only provide satisfying challenges for seasoned players, but be a good introduction to CTFs for new ones! CDCTF is a team competition, you may have up to four participants per team. Universities may have multiple teams representing their school. There will be challenges of all difficulties representing the following categories: Reverse Engineering, Log & Network Traffic Analysis, Forensics, Password Cracking, Cryptography, Open Source Intelligence, Social Engineering, and AI! Registration will open in August. CDCTF is hosted and created by