"There are several ongoing investigations attempting to find the authors of the Conficker botnet, one of the fastest spreading worms in history, but those responsible for the worm have proven elusive. Security expert Mikko Hyppönen, chief research officer at F-Secure Corp., said he is aware of several ongoing investigations, but was asked specifically not to leak details about them. He said investigators have to be especially careful not to leak information because security researchers have determined that the cybercriminals behind Conficker are staying informed.
"They proved over and over that they are watching and will react to what’s going on," Hyppönen said.
Hyppönen is a member of the Conficker Working Group, a consortium of security researchers, registrars, ISPs and law enforcement. The group continues to monitor the botnet for signs of life, but so far they haven’t heard a peep out of the remaining several million infected zombie machines. " – Content courtesy of Security researchers continue hunt for Conficker authors