Zero Trust Definition:
Zero Trust is a security model based on the principle of ‘never trust, always verify.’ It assumes that threats can come from both external and internal sources, so no entity—whether user, device, or application—is trusted by default. Zero Trust requires strict identity verification and access controls to secure networks, applications, and data.
What is Zero Trust?
The Zero Trust model enforces verification at every stage of a digital interaction, regardless of where a request originates. It is a departure from traditional security approaches that rely on network perimeters, instead focusing on securing individual resources through continuous Authentication, Authorisation, and Encryption of data.
Why is Zero Trust important?
The purpose of Zero Trust is to reduce the risk of Data Breaches by preventing unauthorised access and lateral movement within networks. Zero Trust addresses the evolving security landscape, where remote work, cloud services, and mobile devices increase potential attack surfaces. By verifying each access attempt, Zero Trust ensures that only verified entities can interact with sensitive resources.
How does Zero Trust work?
Zero Trust is implemented through a combination of technologies and policies, including multi-factor Authentication (MFA), Least Privilege access, and micro-segmentation. Organisations use these methods to control access, secure applications, and enforce strict permissions, ensuring that each request is verified independently. Continuous monitoring and real-time analytics help detect and respond to potential threats.
Zero Trust Examples:
Examples of Zero Trust principles in action include requiring employees to use MFA for all logins, restricting network access based on role, and using micro-segmentation to isolate sensitive resources. Some organisations implement Zero Trust by requiring all access requests to be verified through identity providers before connecting to any internal resources.
Zero Trust Issues:
Implementing Zero Trust can be challenging, as it requires rethinking existing security architectures and may necessitate new technology investments. The approach demands careful planning, as overly strict policies can disrupt productivity. Regular policy reviews, staff training, and executive support are essential to maintain the balance between security and usability in a Zero Trust environment.
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