Book Image

Learning Network Forensics

By : Samir Datt
Book Image

Learning Network Forensics

By: Samir Datt

Overview of this book

We live in a highly networked world. Every digital device—phone, tablet, or computer is connected to each other, in one way or another. In this new age of connected networks, there is network crime. Network forensics is the brave new frontier of digital investigation and information security professionals to extend their abilities to catch miscreants on the network. The book starts with an introduction to the world of network forensics and investigations. You will begin by getting an understanding of how to gather both physical and virtual evidence, intercepting and analyzing network data, wireless data packets, investigating intrusions, and so on. You will further explore the technology, tools, and investigating methods using malware forensics, network tunneling, and behaviors. By the end of the book, you will gain a complete understanding of how to successfully close a case.
Table of Contents (17 chapters)
Learning Network Forensics
About the Author
About the Reviewers

Analyzing the collected data – digging deep

Analysis of the gathered data is a long and time-intensive process. As network forensic experts, we need to work towards the goals defined for us within the available time frame. In this specific case that we have been discussing, the situation is extremely time critical. Looking at the huge volume of potential evidence available to us, we have to take a call on the triaging process and decide what we wish to focus on first.

One very valuable input that we deduced was that the data had been exfiltrated just over two days before the receipt of the mail by the CEO. The process of exfiltration of data by any criminal actually involves a chain of events. These links in the chain or steps are shown in the following:

  • Reconnaissance

  • Compromise

  • Setup of command and control

  • Data identification, acquisition, and aggregation

  • Exfiltration

While each of these stages will leave some traces on the victims systems, the major role of a forensics investigator comes into...