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

Correlating events and alerts for threat hunting purposes

Your main tool for threat hunting exercises should be some form of event correlation solution. We want a convenient way to find anomalies and correlate/compare those anomalies on a larger scale, to see if we can find additional clues as to what we are looking for. An existing SIEM solution normally lends itself well for the purpose of threat hunting. Note, though, that we will be using the SIEM as a lookup and correlation method to find threats; we won't be relying on the detection mechanisms built into a SIEM to tell us where these threats are. This would just be an automated alert and not a threat hunting exercise. An SIEM alert may trigger a threat hunting exercise, as we discussed earlier, but an SIEM is not a threat hunting resource by itself.

In the previous chapter, Chapter 9, Visualizing, Correlating, and Alerting, we looked at, installed, configured, and worked with a fantastic event and alert management and...