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

Functional digital forensic investigation methodology

There are several different methodologies for conducting analysis. The following digital forensics investigation methodology is based on the best practices outlined in the NIST Special Publication 800-61a, which covers incident response, along with Dr. Peter Stephenson’s End-to-End Digital Investigations methodology. These two methodologies were further augmented by the research publication Getting Physical with the Digital Investigation Process by Brian Carrier and Eugene H. Spafford.

The overall approach to this kind of methodology is to apply digital evidence and analysis to either prove or disprove a hypothesis. For example, an analyst may approach the intrusion based on the initial identification with the hypothesis that the adversary was able to gain an initial foothold on the network through a phishing email. What is necessary is for the analyst to gather the necessary information from the infected system, endpoint...