How to secure your linux VM in the cloud? 1. Enable auto update If you want manual updates: apt update apt dist-update If you want automatic updates: sudo apt install unattended-upgrades sudo dpkg-reconfigure --priority=low unattended-upgrades A GUI will appear end make sure you’ve selected “yes”. 2. Limited User Account Creating Groups Creating users and adding them to a group adduser <username> Then, you will be prompt for password usermod -aG sudo <username> 3.