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SLAMorris Final Thesis After Corrections.pdf - Cranfield University

SLAMorris Final Thesis After Corrections.pdf - Cranfield University

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a file from a storage device based upon its structure. It is commonly used when<br />

the directory information is unavailable, to extract as much of the file as<br />

possible. In the case of deleted files this may not be the complete file as it may<br />

have been partially overwritten [Sammes, 2007]. The following sub-sections<br />

discuss traditional data carving approaches; in Section 7.2.1 the brute force<br />

approach to data carving is described. This is followed by a description of<br />

structural and syntactical data carving approaches in Section 7.2.2.<br />

Figure 7-1: Traditional file carving from clusters of unallocated space on the<br />

storage media<br />

7.2.1 Brute Force Approach<br />

File carving, or file recovery is the process of retrieving complete or partial files<br />

from the storage media when there is no file system information available. Early<br />

file carving methods were based on identifying the header and footer of a file<br />

and then carving out all the information between these two points; this provides<br />

Page<br />

159

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