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)
1
Section 1: ICS Cybersecurity Fundamentals
6
Section 2:Industrial Cybersecurity – Security Monitoring
12
Section 3:Industrial Cybersecurity – Threat Hunting
17
Section 4:Industrial Cybersecurity – Security Assessments and Intel
19
Chapter 15: Industrial Control System Risk Assessments
22
Section 5:Industrial Cybersecurity – Incident Response for the ICS Environment

Chapter 13: Threat Hunt Scenario 3 – Suspicious External Connections

In this chapter, we are going to perform the third and final threat hunting exercise in the series of the three threat hunting scenarios that, as we discussed in Chapter 10, Threat Hunting, help assess the cybersecurity hygiene of a new or additional Industrial Control System (ICS) network (segment). By defining the following three threat hunting hypotheses, There are malicious actors (trying) to beacon out to external IPs/domains, There are malicious or unwanted applications running on assets in the industrial environment, and There are suspicious external connections going into the industrial environment, and performing threat hunting exercises around those hypotheses, we are trying to uncover as much malicious activity as we can when faced with adopting or integrating a new ICS network or the addition/expansion of an existing ICS network. The idea is that by performing these three threat hunting exercises...