Zero Trust Architecture is a modern cybersecurity approach that removes implicit trust from digital environments and requires continuous verification of users, devices, and systems. As advanced threats such as Volt Typhoon demonstrate the risks of credential abuse, lateral movement, and long‑term stealthy access, Zero Trust has gained importance across critical infrastructure sectors, including operational technology environments. This security model emphasizes least‑privilege access, continuous monitoring, and strong identity controls to reduce attack impact. The security brief outlines core Zero Trust concepts, references relevant U.S. federal guidance, and explains how Industrial Defender supports the adoption of Zero Trust strategies in OT environments by improving visibility, policy e

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