Large constellations present unique challenges to space operators in a variety of ways, but due to the increasing interconnection between the satellites within these architectures, cybersecurity is a critical concern. The potential for a massive shutdown of such a system through a network attack could have long-term consequences for the space environment. This article describes the role that legal structures play in managing such risks and asserts that more robust governance should be pursued to mitigate the potential for a catastrophic attack.