Cyber Security of Unmanned Aircraft System Traffic Management (UTM)

Millions of small Unmanned Aircraft System (sUAS) aircraft of various shapes and capabilities will soon fly at low altitudes in urban environments for ambitious applications. It is critical to ensure these remotely piloted aircraft fly safely, predictably, and efficiently in this challenging airspace, without endangering themselves and other occupants sharing that airspace or in proximity. Concepts, technologies, processes, and policies to solve this hard problem of UAS Traffic Management (UTM) are being explored. But, cyber security considerations are largely missing. This paper bridges this gap and addresses UTM cyber security needs and issues. It contributes a comprehensive framework to understand, identify, classify, and assess security threats to UTM, including those resulting from sUAS vulnerabilities. Promising threat mitigations, major challenges, and research directions are discussed to secure UTM.