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

Threat-hunting exercises

A relative newcomer to security monitoring (especially in the industrial space) is threat hunting. With threat hunting, you are not relying on passive or active detection systems to report security incidents, but rather you go find signs of malicious activity. This is unprompted—pick a direction and start digging. And with direction, I am referring to a hypothesis, theory, or interesting scenario. For example, we can take a stance of we have crypto miners running on our industrial HMI computers and start digging around in event logs, asset software lists, packet captures, and other security-related data to either prove or disprove this statement. Of course, this hypothetical statement is typically not pulled out of thin air but is based on situational events or reported issues—for example, operators might have been complaining that their HMI screens are slow.

Threat hunting will be explained in detail in Chapter 10, Threat Hunting, followed...