The Internet is under assault by a highly sophisticated cyber weapon called Duqu designed by digital warriors to wreak cyber-havoc on the critical cyber-infrastructure of the Western world. The emergence of Duqu this week has been accompanied by a huge amount of speculation and discussion about the malware being a direct descendant of Stuxnet. There are some key pieces of evidence in the makeup and behavior of the Duqu, as well as the circumstances of its discovery, that have led many people to jump to the conclusion that the two malware samples are indeed somehow related.
Source: https://threatpost.com/using-stuxnet-and-duqu-words-mass-disruption-102011/75781/