I think Ubuntu (and almost all other Linux distros) suffer from the same problem: there is no real security coordination during development. Compare that to Ope

I think Ubuntu (and almost all other Linux distros) suffer from the same problem: there is no real security coordination during development. Compare that to OpenBSD which very rarely needs to do emergency security updates. With that said, Canonical updates the whole system and all applications. Microsoft updates only the core system, even Office is not updated unless you manually opt in.