# Human Vulnerability Node **Entity class:** Predictive-graph concept ## Definition A **human vulnerability node** is a person represented in a security graph whose access, placement, credentials, knowledge, connectivity, capability, or intent materially changes the reachable attack paths of a sociotechnical system. It is a dynamic state, not a permanent moral essence. ## Relevance to this collection It operationalizes [[wiki/Human CVE|Human CVE]] inside the [[wiki/Counterterrorism Predictive Graph|Counterterrorism Predictive Graph]]: risk changes when access disappears, capability grows, trust relationships change, or new assets become reachable. ## Relationships - **master collection:** [[collections/Terrorism, Counterterrorism, and the Intelligence Environment|Terrorism, Counterterrorism, and the Intelligence Environment]]. - **sociotechnical system:** [[wiki/Sociotechnical Attack Surface|Sociotechnical Attack Surface]]. ## Sources / Provenance - [Defense Counterintelligence and Security Agency, *Exploitation of Insider Access*](https://www.dcsa.mil/Portals/128/Documents/CI/DCSA_CI_Best_Practices_booklet.pdf) (accessed 2026-09-23). **As of:** 2026-09-23