What is Computer Virus?
Posted by Jackie R. on December 7, 2006
A virus is a program that adds itself to a file and forms a modified .exe-file – that’s why you can’t recognize it as a virus file at first sight or remove from the file system. The most common charactaristic of a virus is that it is able to spread itself on its own impulse when it has been activated; further distribution occurs by copying infected files over networks – for example per email. Viruses can delete or change files/data, to delete them efficiently the boot sequence has to be eliminated out of the infected executable file.