Space spider: a hyper large scientific infrastructure based on digital twin for the space internet

With its advantages of low latency and global coverage, the Low Earth Orbit (LEO) satellite constellations can form an effective complement to the terrestrial 5G/6G mobile communication system and provide infrastructure support for broadband access and various services of the Internet. However, due to the spatial particularity of this network across land, sea, air, and other levels, it faces the dilemma of being "easy to attack" and "difficult to defend". At the same time, with the acceleration of the wave of digital transformation, the space Internet is increasingly facing software supply chain security risks. Currently, there is no security simulation and verification platform for the whole life cycle of the space Internet. Therefore, in the present study, we design a digital twin-based hyper large scientific infrastructure for the space Internet named Space Spider to realize the ground simulation of all elements of the space Internet and establish an attack and defense environment for the space Internet to support core technology verification. In addition, we also proposed Spiderland, an open experimental platform for space Internet applications and security researchers, to conduct simulation and attack-defense experiments.