RKHunter - A Security monitoring and analyzing tool

RKHunter is a scanning tool that scans for rootkits, backdoors, and
local exploits by running tests like:

MD5 hash comparison, known rootkit files, incorrect permissions on
binaries, suspect strings in LKM and LKD modules, and hidden files

Rootkit Hunter is released as a GPL licensed project and is free for
everyone to use.
