Which definition describes the guiding principle of the zero-trust architecture?

"Trust, but verify" is an older security paradigm that implies some level of initial trust, which contradicts the core principle of Zero Trust.

"Always connect and verify" doesn't fully capture the "never trust" aspect of Zero Trust and could imply connections are always allowed first.

"Never trust, never connect" would prevent any access, which is impractical for an operational network that needs to allow legitimate users and devices to access resources.

The fundamental tenet of Zero Trust architecture is "never trust, always verify," asserting that organizations should not automatically trust any entity, inside or outside its perimeter. Instead, every access attempt, regardless of origin, must be authenticated, authorized, and continuously validated before granting access to resources.