W32.Duqu is a remote access Trojan (RAT) that appears to have been written by the authors of Stuxnet, Symantec says. Trojan’s purpose is to steal data from manufactures of industrial control systems that can then be used to craft attacks against entities using such systems. Attackers have used Duqu to install keystroke loggers and network enumerators for stealing information that can be used in future attacks. Duqu is named Duqu because it creates files with filenames having the prefix “DQ””]