Zero Trust
In plain terms
A security model that never automatically trusts anything inside or outside the network.
Going deeper
Zero Trust assumes breach and verifies every request's identity, device, and context before granting least-privilege access, rather than trusting users just for being on the internal network.
Under the hood
Replaces network-perimeter trust with continuous, context-aware verification of identity and device posture; micro-segmentation limits lateral movement.
Examples
BeyondCorp, identity-aware proxies, per-request auth, device-posture checks.
Think of it like...
Like a high-security building where every door checks your badge, even after you're inside, instead of trusting anyone past the lobby.