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

Risk and vulnerability management

Now that we know about the importance of an asset inventory, we need to talk about risks and vulnerabilities impacting OT/IoT assets. Common questions we hear from Chief Information Security Officers (CISOs) and business teams are, What are the risks for our crown jewels, that is, OT/IoT assets? What are the mitigation priorities for critical assets?

In most OT/IoT environments, a vulnerability assessment is done on a fixed frequency (once a year or once every 6 months). This does not provide a real-time risk status for OT/IoT assets and overall business risk at any given point in time.

The MDIoT risk assessment report may help you here. The risk assessment report is a comprehensive vulnerability assessment report generated by MDIoT, based on network analytics using deep packet inspection, various behavioral modeling engines, and SCADA-specific state machine design. The good news is this is not a point-in-time truth; it is always current.