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This post follows up on the solution to the vending machine challenge from NorthSec 2025. OKIOK participated in the NorthSec 2025 CTF-style cybersecurity competition. OKIOK performed well, [...]

My colleague François Caron and I, Étienne Ducharme, took on an interesting challenge at the NorthSec 2025 cybersecurity competition (CTF). On the CTF floor, there was a vending machine, and it [...]