Computer Worms are also among some of the most destructive computer threats. These are among those computer viruses which have single handedly caused so much damage that has not been caused by hordes of other types of computer viruses. Structurally they are different from traditional computer viruses,. They follow different attack vector and generally the payload deployment and execution of the Worm class computer viruses relies different aspects and concepts of operating system design. They are also able to use various modes to do self propagation. These computer worm viruses are easily detectable and removable using any computer anti-virus.