Software giant Microsoft offers $ 250,000 bounty to catch Mikko Hypponen author . Industry analysts say is one of the most serious infections they have ever seen . Microsoft has issued a patch to fix the bug , however if a single machine is infected in a large network , it will spread unchecked -- often reinfecting machines that have been disinfected . The worm exploits a bug in Virus 's ubiquitous Conficker software . Microsoft could allow its creators to hijack entire networks .
Software giant Microsoft offers $ 250,000 bounty to catch Mikko Hypponen author . Industry analysts say is one of the most serious infections they have ever seen . The worm exploits a bug in Virus 's ubiquitous Conficker software . Microsoft could allow its creators to hijack entire networks .