Up until about a decade ago, documentary evidence was mostly on
paper. Even computer evidence amounted to reams of printed pages. This is
no longer the case. The electronic version of a file that was created by
and/or stored in a computer can be far more damaging to an individual or to
an organization because it contains not only the documentary evidence
itself but also “data about the data” (such as when it was created, when it
was revised, how it was revised, using whose software).