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CTF Arena

Capture The Flag contests: hack the practice targets, find the hidden flag and submit it for points.

1
Register
Join solo or with a team.
2
Find the flag
Solve the challenge on its target.
3
Submit & score
Paste the flag, earn points, climb the board.

Showing 0 CTFS in this order: featured, live now, upcoming (soonest first), then finished. Ours and other organisers' CTFs are listed together.

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All challenges (17)

Every published challenge on the platform. Open one to read the brief; register to submit flags.