Securing Linux
Enable automatic update
Manual
apt update, apt upgrade... don't use apt dist-upgrade
Automatic
apt install unattended-upgrades
dpkg-reconfigure --priority=low unattended-upgrades
Limited user account
adduser madindo
usermod -aG sudo madindo
Use no password to login
mkdir ~/.ssh && chmod 700 ~/.ssh
logout
ssh-keygen -b 4096
// send public key