This section will give a brief introduction to viruses. We will define them and discuss how they have evolved from the desktop. In addition, we will examine how they might evolve in the near future over wireless media.
A computer virus is a program that has the capability to reproduce itself into other files or programs on the infected system and/or systems connected via a network. The difference between a virus and other forms of malicious code is that the offspring of the original virus must also be able to reproduce. However, simply because a program can do this doesn’t necessarily mean that it’s a virus. For example, some versions of Windows have the capability to copy themselves to other computers; these copies can ...