Book Image

Digital Forensics and Incident Response - Third Edition

By : Gerard Johansen
5 (1)
Book Image

Digital Forensics and Incident Response - Third Edition

5 (1)
By: Gerard Johansen

Overview of this book

An understanding of how digital forensics integrates with the overall response to cybersecurity incidents is key to securing your organization’s infrastructure from attacks. This updated third edition will help you perform cutting-edge digital forensic activities and incident response with a new focus on responding to ransomware attacks. After covering the fundamentals of incident response that are critical to any information security team, you’ll explore incident response frameworks. From understanding their importance to creating a swift and effective response to security incidents, the book will guide you using examples. Later, you’ll cover digital forensic techniques, from acquiring evidence and examining volatile memory through to hard drive examination and network-based evidence. You’ll be able to apply these techniques to the current threat of ransomware. As you progress, you’ll discover the role that threat intelligence plays in the incident response process. You’ll also learn how to prepare an incident response report that documents the findings of your analysis. Finally, in addition to various incident response activities, the book will address malware analysis and demonstrate how you can proactively use your digital forensic skills in threat hunting. By the end of this book, you’ll be able to investigate and report unwanted security breaches and incidents in your organization.
Table of Contents (28 chapters)
1
Part 1: Foundations of Incident Response and Digital Forensics
6
Part 2: Evidence Acquisition
11
Part 3: Evidence Analysis
17
Part 4: Ransomware Incident Response
20
Part 5: Threat Intelligence and Hunting
Appendix

Collecting Network Evidence

The traditional focus of digital forensics has been on locating evidence on a potentially compromised endpoint. More specifically, computer forensics is largely focused on a system’s storage. Law enforcement officers interested in criminal activity such as fraud or child exploitation can find the evidence required for prosecution on a single hard drive. In the realm of incident response, however, it is critical that the focus extends far beyond a suspected compromised system. For example, there is a wealth of information that can be obtained within the hardware and software in question, along with the flow of traffic from a compromised host to an external Command-and-Control (C2) server.

This chapter focuses on the preparation, identification, and collection of evidence that is commonly found among network devices and along traffic routes within an internal network. This collection is critical during incidents where an external threat source is...