PC7 Walkthrough: Arecibo
President's Cup Cyber Challenge (video) · June 11, 2026
Alex, lead challenge developer for the President's Cup Cyber Challenge, walked viewers through the Arecibo CTF challenge, demonstrating how anonymous MQTT access and web-client headers can be abused to complete six single-use token objectives and trigger a final 'fire' action in the simulated observatory control panel.
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