Zero Trust is a security model based on the principle "never trust, always verify". Unlike traditional security, in which everything within the corporate network is considered trusted, Zero Trust assumes that no user, device or application should automatically be trusted.
The driver behind Zero Trust is the changed IT environment. Employees work remotely, applications run in the cloud, and the boundary between the internal network and the outside world has blurred. The classic model of a secured internal network with a firewall as its perimeter offers insufficient protection in this reality.
The core principles of Zero Trust are clear. First: verify every access attempt explicitly, regardless of whether it comes from inside or outside the network. Second: apply the principle of least privilege and give users access only to what they need. Third: assume that a breach has already occurred and limit its impact through segmentation.
Implementing Zero Trust is not a product you buy but a strategy you roll out step by step. Key building blocks are multi-factor authentication (MFA), identity and access management (IAM), network segmentation, endpoint detection and response (EDR), and continuous monitoring of user behavior.
For many organizations, Zero Trust begins with identity. By enforcing strong authentication and basing access on user identity, device posture and context, you lay the foundation. You then expand into network segmentation, creating microsegments that limit the lateral movement of attackers.
From a compliance perspective, Zero Trust aligns well with frameworks such as ISO 27001, NIS2 and DORA. These regulations require measures such as access control, network segmentation and incident detection that are inherently part of a Zero Trust architecture.
In its IT audits, Secure Audit regularly assesses whether organizations have implemented Zero Trust principles and advises on areas for improvement. Contact us for a security assessment or advisory conversation.
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Partner | IT Auditor