I am in need of expert advice:
Our system admin who is new to Ubuntu in particular and *nix in general is reluctant to install any updates. His view is what if after installing updates the system becomes unstable and doesn't boot up? He has some horror stories from past life as Windows sys-admin.
Some in our team believe this is suicidal as not installing (at least) security updates is opening up to malicious attacks.
It was suggested to run
sudo unattended-upgrade so that at least security updates be installed, however even this sometimes requires system to be restarted.
I really appreciate expert comments on this?