A structured reference covering the categories, capabilities, and strategic value of tools used to defend Operational Technology and Industrial Control System environments. ⬡ Classification: Practitioner Reference ⬡ Domain: OT / ICS / SCADA Security ⬡ Audience: Security Engineers & Architects As industrial environments converge with enterprise IT and cloud platforms, the tooling required to defend them has grown significantly in sophistication. Unlike IT security tools, OT/ICS tools must operate within strict constraints they must be non-intrusive, operationally aware, and capable of understanding industrial protocols. This guide catalogs the primary tool categories, their purposes, key examples, and deployment considerations. Why OT Security Tools Are Different The tools designed for enterprise IT environments, endpoint detection, vulnerability scanners, and patch managers, cannot be applied directly to OT environments without risk. An active network scan that is routine in IT can...