Computer viruses are developed by individuals who desire to trigger harm to others, or who wish to gain control over somebody else's computer. The easiest way to produce a virus is to take some existing code and customize it a little. This brand-new code can then be dispersed to others, who might unknowingly run it on their own computers. As soon as the virus is running, it can do anything its developer wants it to, including deleting files, stealing data, or sending spam. More advanced viruses can be really difficult to discover and get rid of. visit this pageclick