The Tiger Scripts are security tool designed to perform audits of UNIX systems. It’s useful as an security check tool and as a host intrusion detection tool (if configured to run through cron and by sending e-mail reports).
You can download it from the following link: https://packetstormsecurity.com/files/download/29883/tiger-3.1.tar.gz
Source: https://packetstormsecurity.com/files/29883/tiger-3.1.tar.gz.html