Glossary · Security
Zero-Trust Security
A security model that trusts no user, device or service by default, including those inside the network perimeter.
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Zero-trust replaces the older castle and moat model (trusted internal network, hostile internet) with a model where the system authenticates, authorises and verifies every request, regardless of where it comes from. Practical zero-trust includes per request authentication, continuous authorisation checks, device posture verification, encrypted service to service communication and micro segmentation. Australian government guidance increasingly aligns with zero-trust principles, and the Essential Eight maturity model overlaps in many areas.
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