Space Infrastructure, such as satellite, plays a significant role in technological advancement on earth; and is no longer the sole responsibility of individual nation-state, or discrete groups, we trust to protect it from adversary cyber-attacks. The increase in the deployment of earth observation satellites, communication satellites, navigation satellites, weather satellites, and space telescopes to support technological advancement on earth present us with the issue of establishing adequate cybersecurity protection for such critical Infrastructure; which support on-earth global telecommunication infrastructures, essential electrical power grids, and GPS guided navigation for transportation. To address this, we adopt a Plan-Do-Check-Act (PDCA) managerial principle to build a cybersecurity framework which will serve as a basis for sound cybersecurity program to address the issue of cybersecurity protection base for Space infrastructure.