Verify the Session, Not the Subnet
Describe why Zero Trust focuses access decisions on identity, device, resource, and session context rather than network location.
Zero Trust begins when location stops being proof. A VPN IP, private subnet, or office switch port can tell you where traffic appears to come from. It cannot prove the user is legitimate, the device is healthy, the session is fresh, or the requested action is appropriate. NIST's Zero Trust Architecture moves the decision closer to the resource and asks for explicit verification each time access matters. The security gain comes from reducing implicit trust. If an attacker steals a token, compromises a laptop, or lands inside a cloud network, they should still face policy checks before reaching valuable resources.…
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