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

An overview of network evidence

There are network log sources that can provide CSIRT personnel and incident responders with good information. Each network device provides a different evidence based upon its manufacturer and model. As a preparation task, CSIRT personnel should become familiar with how to access these devices in order to obtain the necessary evidence or should have existing communication structures in place to engage IT personnel to assist with the proper response techniques during an incident.

Network devices such as switches, routers, and firewalls also have their own internal logs that maintain data on who accessed the device and made changes. Incident responders should become familiar with the types of network device on their organization's network and should be able to access these logs in the event of an incident:

  • Switches: These are spread throughout...