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

Network segmentation in the IoT/OT environment

Network segmentation is an old but sure way of minimizing threats and protecting data or environments. This can be achieved both physically and logically.

With the arrival of Industry 4.0, industries are fast seeing the convergence of IT and OT. The advantages of bringing enterprise and industrial segments of networks together are simply too great to ignore. However, organizations need to take the utmost precaution when bridging the two historically isolated segments of the business as they bring together new vulnerabilities that are introduced by direct or indirect (through an intermediate device) internet connectivity.

OT systems were designed for a specific purpose—to last a long time and tolerate extreme weather conditions, in wet or caustic environments, and communicate over a proprietary protocol. These control systems were isolated from corporate networks. Hence, very often, we find OT networks are flat networks in...