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Digital Forensics and Incident Response

Digital Forensics and Incident Response

By : Gerard Johansen
4.9 (15)
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Digital Forensics and Incident Response

Digital Forensics and Incident Response

4.9 (15)
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)
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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

Packet capture

Capturing network traffic is critical to having a full understanding of an incident. Being able to identify potential C2 IP address traffic may provide further information about the type of malware that has infected a host. In other types of incidents, CSIRT members may be able to identify potential exfiltration methods that an external threat actor is utilizing.

One method is to set up what is referred to as a network tap. A network tap is a system that is in line with the compromised host and the switch. For example, in the network diagram, if the compromised host is on the 192.168.1.0/24 subnet, the tap should be placed in between the host and the switch. This often involves placing a system in between the host and the switch.

Another option is to configure a Switched Port Analyzer (SPAN) port. In this configuration, the switch closest to the compromised host will have port mirroring enabled. This then sends the traffic from the entire segment the switch is...

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