What is Zero Trust? A Model for More Effective Security | UpGuard

Zero Trust is an information security model that assumes no implicit trust for users or devices and requires continuous verification and least-privilege access; this document explains why perimeter-based security fails, outlines core principles (principle of least privilege, micro-segmentation, multi-factor authentication, access control), lists supporting technologies (IAM, SIEM, encryption, analytics), and presents six implementation tenets (verify, contextualize, secure admin environment, grant least privilege, audit everything, use adaptive controls) to reduce attack surface and improve security posture.