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SLAMorris Final Thesis After Corrections.pdf - Cranfield University

SLAMorris Final Thesis After Corrections.pdf - Cranfield University

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In order to determine an artefact was created while the machine was<br />

working properly it is necessary to determine the system behaviour which<br />

led to an artefacts current state.<br />

In order to establish the behaviour an artefact represents it is necessary<br />

to form relationships with other artefacts to identify potential system<br />

activity.<br />

A relationship between artefacts can be defined as an association<br />

between artefacts; the relationship may provide corroboration or<br />

supplementary information that enhances what is known about the<br />

system activity.<br />

Maximising corroboration can be defined as verifying and providing<br />

additional information the artefact with other alternative sources of<br />

information.<br />

The maximum amount of data retrieved is defined as the identification<br />

and reassembly of all thumbnail cache file fragments used during the<br />

research.<br />

Automation is defined as a scientific process which has been<br />

implemented to minimise the interaction of an analyst.<br />

4.4 Process Criteria<br />

This chapter has identified criteria which can be used to evaluate the evidential<br />

value of thumbnail cache artefacts; some requirements emerging from the<br />

discussion of evidential value suggest constraints outside the scope of this<br />

research, but which apply to any investigation in which the results of this<br />

research were applied. They are documented below, for completeness.<br />

4.4.1 Provenance of Artefacts<br />

In order to ensure the original data to be preserved the analysis is generally<br />

performed on a verified image of the original storage media.<br />

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