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

Forming the malware beaconing threat hunting hypothesis

As we discussed in the previous chapter, threat hunting exercises are geared around hypotheses. Typically, hypotheses follow or reflect a discovered security incident or some form of an alert from an automated security monitoring system or a finding from a security analyst. The threat hunting exercise we will be performing in this chapter works a bit differently, as the environment we are going to perform threat hunting activities on is unfamiliar or new to us. For example, our company purchased a new production plant with an existing ICS network infrastructure they are looking to tie to the existing company infrastructure, and we want to make sure that is safe to do. Another scenario would be when you have run your ICS network for ages but never seriously looked at the state of its security posture; in this case, these unprovoked types of threat hunting exercises can quickly and accurately give you an idea of malicious activity...