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 topology of network architecture

When planning your network monitoring, you must understand your network architecture and how you will need to connect it to MDIoT. It is also important to understand how each of your system elements falls into the Purdue model for industrial control system (ICS) OT network segmentation.

MDIoT network sensors continuously detect and monitor network traffic from IoT and OT devices. To get full coverage for your OT/IoT devices, the network sensor needs to be placed in such a way that it can read all the network traffic. Let us delve into this now.

The most common network topologies in OT/IoT networks

The following are some samples of MDIoT sensor placements for different network topologies:

  • Ring topology: In a ring topology network, nodes or switches create a circular data path. Each switch or node device is connected to two others in a circular format. Collectively, the switches or nodes in a ring topology are called ring networks...