August 2017
Intermediate to advanced
336 pages
11h 39m
English
Content preview from System Forensics, Investigation, and Response, 3rd Edition
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Forensic Imaging
Once you have acquired a physical storage medium of some type, you need to image it. You always work with an image whenever possible. Even if the medium is an optical storage device like a Blu-ray disc, you should make a forensic image of the drive and work with the image. It is possible to create a forensic image utilizing open-source tools, specifically Linux commands. This section explains all the details behind each step.
First, you must forensically wipe the target drive (which is the drive to which you will copy the suspect drive contents) to ensure there is no residual data left from a previous case. You can do this with the Linux dd command:
dd if=/dev/zero of=/dev/hdb1 bs=2048This command is literally using /dev/zero ...
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