Access to space is increasingly fundamental to our modern world. Launch volume is rapidly increasing annually, requiring increasing spaceport and ground support capabilities. The design, ownership, and operation of spaceports are bespoke, where their cybersecurity considerations are always an afterthought. This paper focuses on the critical role spaceports play in the access to space and their vulnerabilities to cyber attacks. Further, it demonstrates that without strong cybersecurity, adversaries can easily deny access to space.