Cybersecurity glossary

Zero Trust Architecture (ZTA) is a cybersecurity architecture built on one foundational principle: never trust, always verify. Where traditional security models treat everything inside the network perimeter as trustworthy, a zero trust architecture treats every user, device, application, and connection as untrusted by default, whether it sits inside or outside the corporate network. Every access request is authenticated, authorized, and continuously validated based on identity, device health, and context, and access is granted with the least privilege necessary. The goal is to shrink the attack surface, prevent lateral movement, and contain breaches before they spread across a distributed environment of cloud services, remote workers, and connected devices.