Top 30 Dangerous Computer Virus
                         
                                                   youtube video

A computer virus is a program or piece of code that is loaded into your computer without your knowledge and runs against your hope. Computer virus was first developed in 1986 by two Pakistani brothers in Lahore Pakistan. The first computer virus named “Brain” was designed by Amjad Farooq Alvi and Basit Farooq Alvi. Computer virus usually spread from removable media, from downloads on Internet and from e-mail attachments..