The Linux Rain published a roundup of four security auditing tools for Ubuntu Linux.
Security Auditing Tools For Ubuntu
Malware, where aren’t thou found? Well, even our wonderful Ubuntu can be infected. So what can we do about it? Hope and pray we keep our system safe and better yet, audit our systems regularly for malwares and rootkits. There are 4 system auditors for Ubuntu that we will review - lynis, rkhunter, chkrootkit, and clamav.
Security Auditing Tools For Ubuntu | The Linux Rain