Manufacturing environments present the most complex Zero Trust implementation challenge: converging decades-old OT systems — PLCs, DCS, MES — with cloud-connected supply-chain platforms, remote engineering access, and Industry 4.0 analytics pipelines that IT and OT security teams must jointly secure under IEC-62443 and NIST SP 800-82. Ransomware targeting manufacturing OT has caused billion-dollar production losses at organisations including Norsk Hydro, Honda, and JBS Foods, making network segmentation between IT and OT environments the single highest-priority control for industrial operators.
Related: Zero Trust for OT · IEC-62443 · MES · DCS · Microsegmentation