It's very important to note that qemu-kvm is in Ubuntu main, and VirtualBox is in universe. The quality control, and in particular the security model you might expect are quite different between the two packages in Ubuntu.
It's very important to note that qemu-kvm is in Ubuntu main, and
VirtualBox is in universe. The quality control, and in particular the
security model you might expect are quite different between the two
packages in Ubuntu.