CyberCUBE, ESAs mission to strengthen the cybersecurity of space systems, successfully launched from California Led by GMV for the European Space Agency, the mission relies on a 3U CubeSat platform developed by Alén Space and will serve as an in-orbit laboratory to validate cutting-edge space cybersecurity technologies The European Space Agencys (ESA) CyberCUBE mission, designed to strengthen the protection of space assets against growing cyber threats, has been successfully launched from the Vandenberg Space Force Base in California, aboard a Falcon 9 rocket. The mission, led by the multinational technology company GMV through its teams in Romania and Spain, also involves Alén Space, a pioneering New Space company that has been part of GMV since 2023. The successful launch of the satellite into orbit marks the start of a pioneering mission designed to validate cutting-edge cybersecurity technologies and capabilities applied to the space environment under real-world conditions. CyberCUBE is part of the Cyber Evolutions activities of ESAs Cybersecurity Operations Center (CSOC) within the framework of the Cyber Security Resilience programme, a cross-cutting initiative led by the Agencys Security Office to strengthen the protection of both its corporate systems and its space missions. CyberCUBE was designed as an in-orbit experimentation platform capable of providing ESA with a secure, flexible, and reconfigurable environment for demonstrating new cybersecurity technologies before they are incorporated into future European missions. The missions main goal is to validate the CSOCs data monitoring and analysis capabilities using actual space assets. At the same time, it will make it possible to test new onboard cyber capabilities and collect critical information to improve the resilience of space systems against emerging threats. Highlights of the planned experiments include detection and protection against unauthorised access to command-and-control systems, identification and mitigation of jamming and spoofing attacks, monitoring of onboard systems, and the