# R4: Hardware Supply Chain Attack **Risk:** Compromise of qSIM hardware during manufacturing\ **Likelihood:** Low\ **Impact:** Critical **Mitigation Measures:** * Compliance with NIST Supply Chain Risk Management (SCRM) standards * Dual-sourcing manufacturing (2+ foundries) * Tamper-evident packaging and delivery verification * Continuous attestation for compromise detection * Annual independent hardware security audits * Automated entropy statistical monitoring alerts **Residual Risk:** Low\ Multi-layer detection significantly reduces risk; however, nation-state-level attacks cannot be entirely eliminated. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://railquant.gitbook.io/quantarail/8.-risk-register/r4-hardware-supply-chain-attack.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.