شبكات الثقة المعدومة: إعادة تشكيل الدفاع السيبراني

## Introduction In the rapidly evolving landscape of cyber threats, traditional perimeter-based security models have become insufficient. **Zero Trust Networks** have emerged as a revolutionary approach to redefine cyber defense, focusing on rigorous verification processes and assuming that threats could be both external and internal. ## Understanding "Zero Trust Networks Redefine Cyber Defense" ### Key Concept 1: Never Trust, Always Verify At the heart of Zero Trust is the principle of never assuming trust. Unlike traditional models that trust devices within a network by default, Zero Trust requires continuous verification from every device, user, and application trying to access resources. ### Key Concept 2: Micro-Segmentation Zero Trust leverages **micro-segmentation** to divide networks into smaller segments, each requiring their own verification protocols. This minimizes the risk of lateral movement by attackers. ### Key Concept 3: Least Privilege Access Implementing least privilege means granting users only the access necessary for their roles, reducing exposure if credentials are compromised. ## Core Features and Benefits - **Improved Security Posture**: Continual verification and access control enhance security. - **Reduced Attack Surface**: Micro-segmentation limits potential damage. - **Enhanced Compliance**: Meets stringent regulatory requirements by enforcing strict access controls. ## Technical Deep Dive ### Architecture/Technology Zero Trust architecture includes identity verification, device health compliance, and context-based access controls, often supported by technologies such as **multi-factor authentication (MFA)** and **encryption**. ### Implementation Details Deployment requires a comprehensive assessment of current IT infrastructure, followed by incremental integration of Zero Trust principles, often starting with high-risk applications and users. ## Real-World Applications - **Finance**: Banks use Zero Trust to protect sensitive financial da...