Risk Assessment of a Hypothetical Quantum Repeater Network Using SP 800-30 and the CIA Triad

Abstract

Quantum repeaters are a foundational component of emerging quantum networks, yet their security risks remain poorly characterized. This paper presents a qualitative risk assessment of a hypothetical quantum repeater network using the NIST SP 800-30 framework and the CIA triad. A three-node topology with a single repeater is analyzed under a defined threat model using attack taxonomies from prior quantum networking research. Due to the lack of empirical deployment data, the assessment relies on qualitative analysis and explicit assumptions. Results show that the highest risks stem from physical compromise and manipulation of classical control systems rather than attacks on the quantum plane.