Installing security updates is very important. Especially on a server that is not accessed on a daily basis. This tutorial covers the basics for setting up unattended-upgrades on any Debian-based Linux distribution.

Update the system

sudo apt update && sudo apt upgrade

Install unattended-upgrades

apt install unattended-upgrades
dpkg-reconfigure unattended-upgrades

Further Information

https://wiki.debian.org/UnattendedUpgrades