How To Disable Unattended Upgrades On Ubuntu
https://www.ostechnix.com/how-to-disable-unattended-upgrades-on-ubuntu/

The Unattended Upgrades feature is enabled by default and ran without user’s permission. This might be helpful for casual users who wants to keep their system up-to-date without user-intervention.

確かにこれは余計なお世話かもしれない。Windows 10と似てるな