It looks like the hacker with the handle of "iskorpitx" hit at least 5000 MS 2K servers last night.

Has anyone heard how this was accomplicshed? My thoughts Perhaps done via:
1. A new, unknown vulnerability
2. Built off of one of the MS critical releases
3. The product of hording compromised systems, via known vulns, to set some record?

I would like to know more specifics if anyone is privy to the info.