TIGER, or the 'tiger' scripts, is a set of Bourne shell scripts, C programs and data files which are used to perform a security audit of UNIX systems. It is designed to hopefully be easy to use, easy to understand and easy to enhance. 'tiger' incorporates checks primarily oriented towards Linux integrity including: md5sums checks installed files, (and it can call AIDE or Intergrit aswell), analysis of local listening processes, and then some. Tiger uses 'chkrootkit' for rootkit scanning if it's present.