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

Acquiring threat information

The first requirement for threat intelligence is a reliable source of threat information, a way to get the latest information about threat IOCs.

Here are some IOC sources:

  • Your own incidents and threat hunting efforts
  • Vendor reports
  • Your own honeypots
  • Peers and sharing communities
  • External/third-party free and paid-for feeds:

    Some vendors, such as FireEye, CyberX, and Nozomi, offer these kinds of intel feeds with their tools.

Let's go through these sources in detail.

Your own incidents and threat hunting efforts

The best threat information comes from internal activities and resources. The reason for this is that this information is directly relevant to your environment, which is where it came from. Get into the habit of generating lists of discovered host names, IP addresses, URLs, DNS queries, filenames, file hashes, and any information surrounding the location and situation this information was found in. Before...