What does cybersecurity entail for space ground segments?

• A. Protecting ground systems, networks, and command links from cyber threats; implementing access control and anomaly detection
• B. Designing radiation-hardened hardware
• C. Protecting spacecraft propulsion and power systems from cyber threats
• D. Encrypting only telemetry data during transmission

Answer: (A)

Cybersecurity for space ground segments centers on safeguarding ground systems, networks, and the command links to spacecraft from cyber threats. This means making sure only authorized people and devices can access and operate the control systems (strong access control) and that the systems continuously monitor for unusual or unauthorized activity (anomaly detection) so breaches or compromised equipment are spotted and contained quickly. Ground segments encompass mission control centers, data processing and storage networks, ground stations, and the links that send commands to and receive data from spacecraft; protecting these areas prevents intrusions, data tampering, or command abuse that could disrupt missions. Focusing only on encrypting telemetry misses the broader needs: ensuring proper authentication and authorization, and monitoring for abnormal behavior across the network and control systems, which are essential to maintaining secure and reliable space operations.