How is it possible to make sense out of what is essentially an unruly and only loosely cataloged mass of data? And, how long would such a project take?
The reliance on the law-enforcement approach to digital media exploitation; the implementation of user-friendly forensics applications for use by non-experts, the insistence on following well-accepted approaches designed to withstand judicial scrutiny; and the focus on a single item or small collection of items easily attributed to a single user, are the primary reasons why we've not been able to uncover the full extent of what might be sitting right in front of us.
