“Hack-A-Sat is a Capture the Flag (CTF) competition designed to inspire the world’s top cybersecurity talent to develop the skills necessary to help reduce vulnerabilities and build more secure space systems.
In Hack-A-Sat 1, 2 and 3, the best of the best have been learning more about all the skills required to hack in space through physical flatsat hardware and digital twin simulation. But, this year, PRACTICE IS OVER, as Hack-A-Sat 4 presents the world’s first CTF competition IN SPACE. Five Finalist Teams will compete on Moonlighter, an on-orbit satellite. Moonlighter is the world’s first and only hacking sandbox in space, designed specifically to advance the cyber security community and secure space for us all.”
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At DEFCON 2023, “the U.S. military will stage a contest in which competing teams of white-hat hackers will, for the first time ever, try to penetrate and take over computer systems on a satellite actually
Source: For the First Time, DEFCON 2023 “Hack-A-Sat” Includes a Real-time Cubesat Orbiting Space