Re:Apple's response to the WoSign incidents
by nixgeek on Saturday October 01, 2016 @04:46PM
(#12619811)
In the context of macOS, shipping out even a 75MB bundle of trusted certificates is "not significant".
Bundling it into the browser would increase the download size by a substantial percentage, but 75MB as a 'security update' distributed through the App Store is comparatively tiny versus the 1GB+ which is typical for 10.11 to 10.11.1 style updates.
The question is how they'll actually do that. This was discussed in the moz-sec-policy-thread and people came to the rough conclusion that there are just too many wosign/startcom certificates to whitelist them in any reasonable way.