OT/ICS and IoT Incident Response Plan

What is an Incident Response Plan? Modern-day enterprises experience cybersecurity threats and risks are a part of everyday business. Therefore, protecting business assets requires pre-emptive and proactive measures, and IRP is one such approach that assists security teams in handling a security event. A network security breach can put an enterprise into chaos. A security breach exposing sensitive data and networks pushes security teams into panic, especially the inexperienced ones. Even an expert security team might fail in neutralizing a threat optimally if they are unprepared. To ensure optimal handling of threats even in crunch situations, irrespective of the teams’ experience, the Incident Response Plan (IRP) comes in handy. An Incident Response Plan is a document that assists IT and OT security professionals in responding effectively and timely to cyberattacks. The IRP plan includes details, procedures, and tools for identifying, and detecting an attack/malfunction, analyzing, determining its severity, and mitigating, eliminating, and restoring operations to normalcy on IT, IIoT, and OT networks. The IRP plays a crucial role in ensuring an attack does not recur. The amalgamation of IT, IIoT, and OT networks has made cyberattacks at the core of security breaches, along with other challenges like modification to control systems, and restricting interface with operational systems among others. Attacks on IT, IIoT, and OT Networks: Cyberattacks: The cyberattacks can originate in the following manner, targeting the corporate and operational divisions of an enterprise: Modification to control systems: From disabling safety sensors to triggering a reaction of event failures, modification to control systems can have drastic effects. The case is worse in the case of OT networks, where there is little to no security with a single event capable of impacting the whole supply chain ecosystem. The physical infrastructure at manufacturing plants comprises thousands of PLCs, multi-layered SCADA systems, and DCS. Any process malfunctioning and anomalies occurring at the plant level can affect the OT infrastructure. The following signs raise red flags about malfunction or an attack on an OT network: It is crucial to acknowledge that threats can take any form and shape, and a comprehensive IRP should be able to address the challenges above thoroughly. There have been numerous instances of a cyberattack-led attack destroying OT networks and affecting related infra

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