This chapter described some problems of unsound digital evidence, the need for impartiality in undertaking forensic examinations, and some common pitfalls that diminish the value of digital forensics through cursory and biased examinations.
The pressing need for structured and balanced analysis was outlined, as was the need to validate evidence to determine its relevance and authenticity in anticipation of it being tendered in legal proceedings. The process stressed the importance of testing and checking the evidence to ensure it is what it purports to be. This included the discussion of a more structured analysis of the evidence collected, including the development and testing of hypotheses and counterarguments in line with forensic standards.
A prototype model of validation was presented, intended to benefit practitioners in handling complex evidence, in which the process of testing and checking digital evidence was presented through a sample scenario. The presentation of evidence...