Spyware is different from other viruses and worms in such a way that spyware does not typically self replicate or reproduce on its own. But on the other hand, just like many modern viruses, spyware take advantage of contaminated computers to gain financially. A whole lot of contemporary crimes nowadays can be accounted for to spayware. However, since there is really no perfect crime, spyware can not be of any difference because there are other spyware that leaves evidences of its guilt. Because of the increasing number of threats of being attacked, many companies have resorted to increase their security measures.