Chkrootkit – http://www.chkrootkit.org/
OSSEC – http://ossec.github.io/
Rootkit Hunter / RKHunter – http://rkhunter.sourceforge.net/
Chkrootkit – http://www.chkrootkit.org/
OSSEC – http://ossec.github.io/
Rootkit Hunter / RKHunter – http://rkhunter.sourceforge.net/