What was the first virus detected in arpanet?

by Khalid Betani

A computer virus is a computer program that can replicate itself. The Creeper virus was first detected on ARPANET, the forerunner of the internet, in the early 1970s. Creeper was an experimental self-replicating program written by Bob Thomas at BBN Technologies in 1971. Creeper used the ARPANET to infect DEC PDP-10 computers running the TENEX operating system. Creeper gained access via the ARPANET and copied itself to the remote system where the message, "I'm the creeper, catch me if you can!" was displayed. The Reaper program was created to delete Creeper.