Cybersecurity covers the practice of governments or enterprises to protect computers from cyberattacks such as hacking, phishing, spoofing, spamming and the inclusion of “malware”. Thus, cybersecurity can be extended to all digital information, meaning that satellite systems have also become vulnerable to cybersecurity threats. Cyber-attacks can be differentiated from the electronic attacks because they target the “data” stored onboard satellites, and not necessarily the services delivered by satellites (uplink and downlink). Since satellite data supports critical infrastructure, the space cybersecurity represents a global concern. The challenge from a legal perspective is to define what a cyberattack is and come up with an international legal framework that could guarantee space cybersecurity and cyber resilience. But even so, can the cybersecurity laws and policies represent a real deterrent against perpetrators?