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NASA NTRS2024

Discovery and Synchronization Service Architectural Notes

This is a short architectural note for a critical component of safely scaling drone operations. The primary motivation for this note is to collect language and terminology around the Discovery and Synchronization Service (DSS) as it is currently implemented for Uncrewed Aircraft System (UAS) Traffic Management. The major driver for this document was frequent miscommunication about DSS. Often there have been multiple informed and invested stakeholders in the same room making statements about “multiple DSSs” and each of them meaning something slightly different.

uas traffic management↗

NASA NTRS2024

DSS Security Assessment

The Discovery and Synchronization service (DSS) has implemented some reasonable technical controls that help improve security and there are very few technical findings. The use of Docker and Kubernetes helps simplify the deployment process, and the DSS uses mutual TLS (mTLS) to connect. Much of the security risk across the DSS is a factor of its nature, a distributed environment that relies on all members to secure their parts correctly. As such, the DSS team should attempt to emphasize security controls that reduce complexity for securing entities’ Cockroach DB (CRDB) instances properly and improve coordination among DSS members for things like security patching, incident response, detecting, and removing bad actors. The DSS team must recognize that operating a DSS instance securely will require a combination of technical and procedural controls. Each DSS entity must configure their instance properly and follow standard operating procedures to ensure that the DSS service is secure.

threat modeling↗

NASA NTRSDate not supplied

Developing a Cybersecurity Architecture for Extensible Traffic Management (xTM)

This paper explores the development of a cybersecurity architecture tailored for Extensible Traffic Management (xTM) to address emerging challenges in managing diverse aerial vehicles within the National Airspace System (NAS). Driven by technological advances and the rise of uncrewed aerial systems (UAS), urban air mobility (UAM), and high-altitude traffic (ETM), the NAS is undergoing a paradigm shift. Traditional air traffic management, reliant on traditional Federal Aviation Administration (FAA) control, will give way to decentralized coordination among autonomous and semi-autonomous systems. The proposed xTM Security Architecture, designed as a high-level framework, focuses on ensuring the confidentiality, integrity, and availability of data and operations in this evolving ecosystem. Utilizing threat modeling, the research identifies potential risks across key flight phases, operations and use cases to offer security control recommendations. Key objectives include analyzing interactions between novel airspace entrants and existing NAS traffic, cataloging vulnerabilities, and developing mitigative strategies to ensure safety, operational stability, and secure data exchanges. This research lays the groundwork for regulatory and industry adaptation, providing critical insights into managing cybersecurity risks in this complex, multi-domain environment.

UAM↗