Maple Defender is CJCR’s very own cyber security competition! It is open to all cadet corps and squadron teams, and also to cadet teams from the United Kingdom (UK). In 2025, close to 200 cadets from Canada and the UK participated.

 Teams of 2-6 cadets work together to find and fix security issues in a simulated computer system. They can also earn extra points by answering a cybersecurity quiz.

Teams can have between 2 and 6 members, and there is no limit to the number of teams each corps or squadron can have.

This competition is open to all corps and squadrons with cadets interested in cybersecurity, even if they’re total beginners! Our goal is to learn new things, connect with other cadets, and have fun.