Lynis is a free open source audit tool. Download Lynis: https://packages.cisofy.com Install Lynis on Ubuntu 16.04.4 LTS sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys C80E383C3DE9F082E01391A0366C67DE91CA5D5F sudo apt install apt-transport-https echo 'Acquire::Languages "none";' | sudo tee /etc/apt/apt.conf.d/99disable-translations echo "deb https://packages.cisofy.com/community/lynis/deb/ xenial main" | sudo tee /etc/apt/sources.list.d/cisofy-lynis.list sudo apt update sudo apt install lynis lynis --version sudo lynis audit system lynis show details sudo less /var/log/lynis.log
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