The Brain virus was on 19 January 1986, released by two Pakistani brothers, Amjad Farooq Alvi and Basit Farooq Alvi. It was written for the IBM PC, and referred to the kopi lwa ren of medical software that are used by the two was developed.
The name of the virus stems from the fact that the program in the boot sector of fat storage replaced and moved to a bad sector, after which the infected 5¼”floppy disk, the volume label ‘Brain’ was assigned. Infected bootsectors showed in addition the following text:
Welcome to the Dungeon (c) 1986 Basie & Amends (pvt) Ltd VIRUS_SHOE RECORD V9.0 Dedicated to the dynamic memories of millions of viruses who are no longer with us today – Thanks GOODNESS!! BEWARE of THE there..VIRUS : this program is catching program follows after these messages….$#@%$@!!
In addition, the contact details of the brothers in the source code to find, for the case that users of the virus off wanted. Further consequences of the virus were that floppy disks are a lot slower, and they 7 kilobytes of memory were missing. Also had the two a counter to the piece of software is added, so they could keep track of how many disks were infected. In 2011, security firm F-Secure is a short documentary about the Brain virus.