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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
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Chapter 1: Understanding Incident Response
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Part 2: Evidence Acquisition
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Part 3: Evidence Analysis
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17
Part 4: Ransomware Incident Response
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Part 5: Threat Intelligence and Hunting
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Index
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Appendix
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Firewalls and proxy logs

Two main sources of evidence available while investigating an incident are ingress/egress points into the network from the internet. Modern malware and other exploits will often require the ability to reach internet-based resources. This may be for the purpose of downloading additional malware or to exploit code. Other attacks that involve data exfiltration will require access to the internet. Finally, adversaries will often have to establish C2 over compromised systems. In these cases, traffic from various protocols will traverse the perimeter of the victim network. Depending on the victim, this traffic will have to traverse a firewall, internet proxy, or both. As a result, both technologies provide incident response personnel with a major source of evidence.

Firewalls

Firewalls have evolved from a simplified routing and blocking technology into platforms that provide a significant insight into the traffic coming into and leaving the network. Next-generation...

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