Definition
A Zero Trust Strategy is a security framework that operates on the principle of never trust, always verify. It assumes that threats can exist both inside and outside an organization's network, requiring strict identity verification for every person and device attempting to access resources. This approach enforces least privilege access, meaning users and systems are granted only the permissions necessary to perform their specific tasks. Implementing Zero Trust involves continuous monitoring, microsegmentation of networks, and robust authentication methods to minimize the attack surface. It is crucial for protecting sensitive data and critical infrastructure against increasingly sophisticated cyber threats. For instance, a company might require multi-factor authentication for all employees accessing internal applications, even if they are already on the corporate network. This differs from traditional perimeter security, which often implicitly trusts users once they are inside the network boundary. Zero Trust principles are foundational to many cybersecurity certifications, including CompTIA Security+ and CySA+.