Book Image

Digital Forensics and Incident Response - Second Edition

By : Gerard Johansen
Book Image

Digital Forensics and Incident Response - Second Edition

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 second edition will help you perform cutting-edge digital forensic activities and incident response. After focusing on the fundamentals of incident response that are critical to any information security team, you’ll move on to exploring the incident response framework. From understanding its importance to creating a swift and effective response to security incidents, the book will guide you with the help of useful examples. You’ll later get up to speed with digital forensic techniques, from acquiring evidence and examining volatile memory through to hard drive examination and network-based evidence. 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 have learned how to efficiently investigate and report unwanted security breaches and incidents in your organization.
Table of Contents (22 chapters)
Section 1: Foundations of Incident Response and Digital Forensics
Section 2: Evidence Acquisition
Section 3: Analyzing Evidence
Section 4: Specialist Topics

Analyzing firewall and proxy logs

Chapter 4, Collecting Network Evidence, contained a good deal of information concerning the acquisition of network-based evidence and the types of log files that are of importance to an incident responder or security analyst. Aside from the previously covered packet capture, there was a good deal focused on the acquisition of log files from a variety of sources. These log files can provide some insight into the potential indicators of compromise that can aid in an incident investigation. The main challenge for analysts, though, is sifting through all of the irrelevant logs to find those that have some evidential value.

Log file analysis can be performed in a variety of ways. The specific method that is used may often depend on the type of incident, the tools available, and the amount of log data that has to be analyzed. The following are some...