What is a "top 2000 global organisation"
... and where do I apply to become one?
I looked through the linked PDF, and there's not a word that actually defines what the term means. Only when you get to the references, is there a pointer to Forbes.com's "global 2000", which I'm guessing means that's the answer.
And of course, most of those companies are multinationals. So these industrious hackers have been "testing" and discovering that servers in different countries, but belonging to the same companies, are in different states of patchedness. A server belonging to HyperGlobalMegaNetCorp in Germany is more likely to be patched than one in Australia.
So much for globalisation...