Book Image

Industrial Cybersecurity - Second Edition

By : Pascal Ackerman
Book Image

Industrial Cybersecurity - Second Edition

By: Pascal Ackerman

Overview of this book

With Industrial Control Systems (ICS) expanding into traditional IT space and even into the cloud, the attack surface of ICS environments has increased significantly, making it crucial to recognize your ICS vulnerabilities and implement advanced techniques for monitoring and defending against rapidly evolving cyber threats to critical infrastructure. This second edition covers the updated Industrial Demilitarized Zone (IDMZ) architecture and shows you how to implement, verify, and monitor a holistic security program for your ICS environment. You'll begin by learning how to design security-oriented architecture that allows you to implement the tools, techniques, and activities covered in this book effectively and easily. You'll get to grips with the monitoring, tracking, and trending (visualizing) and procedures of ICS cybersecurity risks as well as understand the overall security program and posture/hygiene of the ICS environment. The book then introduces you to threat hunting principles, tools, and techniques to help you identify malicious activity successfully. Finally, you'll work with incident response and incident recovery tools and techniques in an ICS environment. By the end of this book, you'll have gained a solid understanding of industrial cybersecurity monitoring, assessments, incident response activities, as well as threat hunting.
Table of Contents (26 chapters)
Section 1: ICS Cybersecurity Fundamentals
Section 2:Industrial Cybersecurity – Security Monitoring
Section 3:Industrial Cybersecurity – Threat Hunting
Section 4:Industrial Cybersecurity – Security Assessments and Intel
Chapter 15: Industrial Control System Risk Assessments
Section 5:Industrial Cybersecurity – Incident Response for the ICS Environment


Also referred to as a perimeter network, the IDMZ is a buffer zone in the ICS network architecture that enforces data-sharing security and allows a fine-grained control over interactions between a trusted network (the Industrial Zone) and an untrusted network (the Enterprise Zone). The IDMZ adds an additional layer in the defense-in-depth (DiD) model, used to securely share ICS-related data and network services between two (or more) security zones.

The following diagram presents an overview of the IDMZ within the Purdue model:

Figure 3.1 – The IDMZ within the Purdue model

Using a DMZ to separate security zones has been a commonplace practice in traditional IT networks for years. Implementing a DMZ between an Enterprise (business) network and an Industrial (production) network is also a recommended best practice by several industrial security standards, including the National Institute of Standards and Technology (NIST), IEC-62443, and...