Table of Contents Introduction: Why Industrial Routers Have Become Critical Security Nodes The 5 Major Security Risks of Industrial Router Deployment 2.1 Unauthorized Access Risk 2.2 Unencrypted Data Transmission Risk 2.3 Firmware Vulnerabilities and Missing Patch Risk 2.4 OT Network Lateral Penetration Risk 2.5 Compliance and Regulatory Failure Risk (including EN 18031) How IIoT Devices Can Meet Cybersecurity Compliance Requirements 3.1 Secure by Design Architecture 3.2 Role