As another comment points out, unlike Google updates, Microsoft's occur on a particular day of every month. This allows end user IT departments to coordinate th

As another comment points out, unlike Google updates, Microsoft's occur on a particular day of every month. This allows end user IT departments to coordinate the updates as part of a predictable change management policy. In this case, the bug was reported on 13 Oct, 15 working days before the first Tuesday of November. Assuming Microsoft couldn't fix and test a change to a core service running on millions of desktops in that time, their only remaining opportunity within the disclosure window was the patch day in December - allowing them only 50 calendar days to deal with the bug. What's worse is that the bug isn't even all that severe. Effectively Google were trying to strong-arm Microsoft into releasing an out of band patch for a minor issue, which would have knock-on effects for thousands of IT departments. A completely dick move, and thankfully one that's being given recognition here. Shit like this is why I have a hard time dealing with the infosec community in general – a strange mix of conformance to pointless minutia, a deeply ingrained sense of self-importance (only worsening over time with PR crap like APT), and a fatal attraction with some of the most puerile elements of society. The result is a unique melting pot of genius and dumb that I regularly can't stomach.