The Human Risk Index (HRI) is a cybersecurity metric that quantifies the likelihood of individuals within an organization being susceptible to cyber threats due to human factors such as lack of awareness, poor security habits, or susceptibility to social engineering. HRI is calculated using data from phishing simulations, security training results, behavioral analytics, and incident reports. It helps organizations identify high-risk employees or departments and tailor security awareness programs to reduce vulnerabilities. By monitoring the HRI, organizations can proactively address human-related security gaps and improve their overall cybersecurity posture.