Worm.Downadup is a worm that spreads by exploiting vulnerability in the Windows RPC Server Service. Having all Windows systems, except Windows 7 Beta, at its disposal, plus a highly optimized code this particular e-threat is spreading with incredible speed. Worm.Downadup is regarded as a high security risk to any PC system, therefore one needs to immediately remove it from any computer system, once is had been detected. Important to bear in mind is the fact that Worm.Downadup regularly carries out covert downloads onto computers, as well as it has a predilection to install rogue security programs and other malware. Worm.Downadup needs be removed from a system immediately, as it affects the system in such a way that the opening of illicit network connections, the use of polymorphic tactics to self-mutate, the disabling of already installed security software, modification of system files, and not forgetting the installation of additional malware is pretty much assured.