Crimson Defense CTF 2026, known as CDCTF, runs as a 12-hour online Jeopardy-style contest on October 3rd, open to collegiate teams of up to four players. Organizers say it's built to challenge veteran competitors while still serving as an approachable entry point for newcomers. Multiple teams from the same university are welcome to compete, according to the event listing.
// source: ctftime.org ↗