Book Image

IoT and OT Security Handbook

By : Smita Jain, Vasantha Lakshmi
Book Image

IoT and OT Security Handbook

By: Smita Jain, Vasantha Lakshmi

Overview of this book

The Fourth Industrial Revolution, or Industry 4.0, is all about digital transformation, manufacturing, and production. The connected world we live in today, including industries, comes with several cybersecurity challenges that need immediate attention. This book takes you through the basics of IoT and OT architecture and helps you understand and mitigate these security challenges. The book begins with an overview of the challenges faced in managing and securing IoT and OT devices in Industry 4.0. You’ll then get to grips with the Purdue model of reference architecture, which will help you explore common cyber attacks in IoT and OT environments. As you progress, you’ll be introduced to Microsoft Defender for IoT and understand its capabilities in securing IoT and OT environments. Finally, you will discover best practices for achieving continuous monitoring and vulnerability management, as well as threat monitoring and hunting, and find out how to align your business model toward zero trust. By the end of this security book, you’ll be equipped with the knowledge and skills to efficiently secure IoT and OT environments using Microsoft Defender for IoT.
Table of Contents (16 chapters)
Part 1: Understand the Challenges in IoT/OT Security and Common Attacks
Part 2: How Microsoft Defender for IoT Can Address the Open Challenges in the Connected World We Live in Today
Part 3: Best Practices to Achieve Continuous Monitoring, Vulnerability Management, Threat Monitoring and Hunting, and to Align the Business Model Toward Zero Trust
Chapter 9: Vulnerability Management and Threat Monitoring

The IoT and OT environments

Figure 4.1 is a diagrammatic representation of IoT and OT environments in organizations, which might then be connected to an IoT hub for the further processing of data. Azure IoT Hub receives data from both OT and Enterprise IoT (EIoT) environments, as depicted in the following figure:

Figure 4.1 – Representation of IoT and OT environments

Let us look into agentless device inventory. The issue that the industry is trying to solve is keeping OT/IoT devices up to date, but in reality, they are unpatched, and IT teams have no insight into the status of the devices, whether they are patched or not. Additionally, these OT/IoT devices do not support agents. It is, hence, important to understand specialized protocols used by IoT/OT devices and machine-to-machine behaviors to be able to use agentless monitoring using MDIoT. Thus, it provides security and visibility into the organization’s network.

A centralized portal can...