The spreading Conficker/Downadup worm is now viewed as such a significant threat that it’s inspired the formation of a posse to stop it, with Microsoft leading the charge by offering a $250,000 reward to bring the Conficker malware bad guys to justice. The money will be paid for ‘information that results in the arrest and conviction of those responsible for illegally launching the Conficker malicious code on the Internet,’ Microsoft said today in a statement, adding it is fostering a partnership with Internet registries and DNA providers such as ICANN, ORG, and NeuStar as well as security vendors Symantec and Arbor Networks, among others, to stop the Conficker worm once and for all. Conficker, also called Downadup, is estimated to have infected at least 10 million PCs. It has been slowly but surely spreading since November. Its main trick is to disable anti-malware protection and block access to anti-malware vendors’ Web sites.