I am the sole IT Admin for a small construction company. Investigation around files accessed just before an employee left the company shows that around 7000 files were accessed in a 15 minute period on the network. Some of the files have limited access due to Group Security, which narrows down the list of people who could have accessed the files. My question is, is there any way to PROVE that a network user copied files to their PC or an external hard disc, when auditing has not been enabled on the network?