FBI and CISA Released Zero Trust Principles Implementation Guide for OT Environments

The FBI, CISA, DOE, and defense partners published joint guidance titled 'Adapting Zero Trust Principles to Operational Technology' recommending an "assume breach" Zero Trust approach for industrial control systems. Key priorities include building real-time asset inventories, enforcing continuous identity and access controls (MFA and least privilege), implementing network micro-segmentation and unidirectional gateways, deploying OT-aware continuous monitoring, and aligning controls with the NIST Cybersecurity Framework to protect physical operations and safety.