I am not sure that works - imagine that the next shellshock had been found. Would you want to wait 7 days to update?

We need to either screen everybody or cut of countries like North Korea and Iran from the Internet.

These vulnerabilities are all caught by scanners and the packages are taken down 2-3 hours after going live. Nothing needs to take 7 days, that's just a recommendation. But maybe all packages should be scanned, which apparently only takes a couple of hours, before going live to users?