This guide explains the Zero Trust security model and its core principles based on the U.S. Department of Defense framework. It outlines seven pillars—users, devices, networks, applications, data, visibility and analytics, and automation—each contributing to a comprehensive security architecture. The guide emphasizes “never trust, always verify,” enforcing least privilege, continuous monitoring, and risk-based authentication. It also details challenges such as legacy system integration and user adoption. By implementing these pillars, organizations can improve resilience against modern threats and reduce lateral movement risks.

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