Zero Trust is a security model that assumes no implicit trust for any user, device, or system, requiring continuous verification regardless of network location. Operating on "never trust, always verify" principles, it implements multi-factor authentication, least privilege access, network micro-segmentation, and continuous monitoring. From an insurance perspective, Zero Trust implementation may reduce premiums by demonstrating mature security practices and limiting potential breach impact through segmentation. The model's comprehensive logging and validation processes provide strong evidence of reasonable security measures, supporting claim defensibility while potentially reducing both incident severity and associated claim costs.