A security model built on the principle never trust, always verify, requiring every user and device to be authenticated and authorized continuously.
Traditional network security assumed that anything inside the corporate network could be trusted, like a castle protected by a moat. Once attackers got inside, they could often move freely. Zero trust removes that assumption. Every access request is evaluated based on identity, device health, location, and other context, no matter where it comes from.
Key practices include strong authentication such as multi-factor authentication, least-privilege access so users get only what they need, micro-segmentation of networks, continuous monitoring, and encryption everywhere. Zero trust is not a single product but a strategy implemented gradually across identity, devices, networks, applications, and data. Frameworks from organizations such as the US National Institute of Standards and Technology describe reference architectures.
The process of verifying that a user, device, or system is who or what it claims to be.
Identity and Access ManagementThe policies and tools, known as IAM, that control who can access which systems and data, and what they are allowed to do.
Mobile Device ManagementSoftware, known as MDM, that lets an organization configure, secure, and monitor the phones, tablets, and laptops used for work.
Multi-Factor AuthenticationA login method that requires two or more different types of proof of identity, such as a password plus a code from your phone.
Principle of Least PrivilegeA security rule that people, programs, and devices should have only the minimum access needed to do their job, and no more.
Secure Access Service EdgeA cloud-based approach, known as SASE, that combines networking and security services so users connect safely from anywhere.
Virtual Private NetworkA service that creates an encrypted tunnel between a device and another network, protecting traffic and masking the user's IP address.
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