 entry
might be made in the audit trail whenever a user logs in or accesses a file. Examination of the audit trail may detect attempts at
violating the security of the system and help to identify the violator. [Computer and Information Sciences] 
n., Methods to demonstrate that records were effectively protected from unauthorized, use, alteration or destruction. [General Dictionaries] 
a.,
n., A record which is a representation of words, music, or any other manifestation of sound that can only be perceived 