Digital Investigation and Digital Evidence

Digital Investigation

A  digital  investigation  is  a  process  where  we  develop  and  test  hypotheses  that  answer
questions about digital events. This  is done using  the scientific method where we develop a
hypothesis using evidence that we find and then test the hypothesis by looking for additional
evidence  that  shows  the  hypothesis  is  impossible. 

Digital Evidence

Digital  evidence  is  a  digital  object  that contains reliable information that supports or refutes a hypothesis.

Source : 

Brian Carrier. File System Forensic Analysis.