Debian has the package apt-transport-https which would enable https-downloads from apt repositories.
However, the debian repositories are only accessible over http.
A privileged observer would easily know alot of system detail by inspecting my communication with the debian apt servers.
For example a large scale automatic penetration system would be able to automatically detect vunerable systems while they are downloading the required updates, and attack them before the update has been installed.
Debian implements checksums and gpg signatures in order to verify file content sent in the clear, see https://wiki.debian.org/SecureApt
A privileged observer would easily know alot of system detail by inspecting my communication with the debian apt servers.
For example a large scale automatic penetration system would be able to automatically detect vunerable systems while they are downloading the required updates, and attack them before the update has been installed.
Debian implements checksums and gpg signatures in order to verify file content sent in the clear, see https://wiki.debian.org/SecureApt
The same seems to apply to Ubuntu.