On Oct 20, just two days after researchers released details about the Duqu malware, its creators scrubbed all the files from their command-and-control servers in an effort to conceal their identity.
Microsoft on Tuesday patched one "critical" vulnerability, plus three other less-severe flaws. Not patched, as expected, is a bug related to the Duqu trojan.
Microsoft is prepping four security bulletins for its November update, though it is not expected to provide a fix for the zero-day flaw used to spread Duqu.