Critical Security Threats and the Need for ZTNA explains how modern cyberattacks increasingly bypass traditional perimeter defenses through tactics such as business email compromise, ransomware, server-side request forgery, privilege escalation, and mobile exploits. The paper shows how hybrid work, cloud adoption, and AI-driven automation have expanded attack surfaces and enabled attackers to move laterally once inside networks. It argues that Zero Trust Network Access is essential because it assumes no implicit trust and continuously verifies users, devices, and access requests based on identity, posture, and risk signals. By combining strong authentication, micro-segmentation, device verification, and real-time threat intelligence, ZTNA helps organizations reduce attack impact, limit lat

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