Building OT Resilience: IT/OT Security

Within industrial environments, the line between IT and OT security is increasingly blurred - making unified visibility across both domains more critical than ever. Rising cyber threats and regulatory pressure, including the NIS2 directive, demand organisations improve resilience by detecting and responding to attacks that often begin in IT and spread into OT. Splunk enables this by providing a holistic view across the full Purdue Model stack - from Level 0 control systems to Level 5 enterprise networks - allowing for faster threat detection, lateral movement tracking, and real-time incident response. A key challenge for OT teams, such as alert fatigue from thousands of false positives, is tackled with Splunk’s risk-based alerting system - prioritising meaningful threats while reducing noise. Additionally, integration with popular OT tools like Cisco Cyber Vision and Claroty is seamless, helping teams centralise their detection and monitoring.

Splunk's approach mirrors the resilience of earthquake-proof towers - designed to bend but not break. Their layered methodology begins with foundational visibility, followed by unified IT and OT SOC capabilities, OT-specific use cases (such as perimeter monitoring and remote access), and cutting-edge technologies like MITRE ATT&CK for ICS. Orchestration, automation and AI-driven tools further streamline response times and improve threat prioritisation. Customers like Johnson Matthey in the UK are already leveraging Splunk’s full IT and OT security portfolio - including Splunk Enterprise Security, SOAR and risk-based alerting - to automate workflows, reduce risk and gain real-time insight. Whether managing a chemical plant or a national energy grid, Splunk provides a proven framework for securing critical infrastructure at scale - with tools, integrations and customer success stories that show its value in the real world.