Container Security Capture the Flag

This Kubernetes Capture the Flag (CTF) contest features a Kubernetes-based CTF challenge, where teams and individuals can build and test their Kubernetes skills. Each team/individual is given access to a single Kubernetes cluster that contains a set of serial challenges.

This event runs two parallel activities:

• Cooperative CTF - run through the previous year's CTF with walkthrough instructions, to learn about Kubernetes and container security!
• Competitive CTF - compete against other teams on the new contest for points, learning and comraderie!

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Feburary 18, 2026 - DEF CON 34

Plans are in the works for the sixth annual Kubernetes CTF at DEF CON!

September 1, 2025 - Last year's contest: DEF CON 33

Learn about last year's CTF contest.