Lin Hsin Hsin Quantum Security Center











Quantum Threats by
Layer and Component




Layer 2 -- Optical Network Layer
        Components

        📍 Quantum communication systems (QKD)
        📍 Optical switches, routers



    Quantum Threats

    Man-in-the-Middle (MITM) Attacks on QKD
    Intercepting and resending quantum states (eg using quantum repeaters or memory) to break QKD protocols

    Protocol Exploits
    Exploiting weaknesses in QKD protocols (eg BB84, E91) by using quantum computing to solve underlying mathematical problems (eg Shor’s algorithm for factoring).

    Quantum Jamming
    Disrupting entanglement distribution or quantum state transmission, causing network outages

    Traffic Analysis
    Quantum sensors can analyze optical network traffic patterns to infer sensitive information.
    Layer 1     Layer 1.5     Layer 2     Layer 3     Layer 4 -7     Summary