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

Typical risks to an ICS environment

Due to the characteristics of a typical ICS, the following risk categories can be found in most ICS environments:

  • Denial of service attacks: By far the biggest risk to the ICS is denial of service (DOS) attacks (remember, uptime and availability is the main focus of an ICS). DOS attacks are based on overloading target resources to the point where legitimate users can no longer interact with the target system. A classic example of a DOS attack is the SYN flood, where the attacker bombards the target system with so-called SYN packets – packets where the TCP SYN flag is set. SYN packets are the first packets in the three-way TCP handshake and establish a connection between two systems. After receiving the SYN packet from the attacker, the target will allocate some resources (a socket) to respond to the SYN packet with a SYN/ACK packet (a packet where the TCP flags called SYN and ACK are set) to tell the attacker, "I am ready to establish...