what is virus ?

what is virus ?

Ans: On kind of program which is harmful to computer operation.

A BRIEF HISTORY OF VIRUSES

SELF-REPRODUCING AUTOMATA =1953

1956=Core wars

1971=The creeper

1974=Rabbit

1975=Animal

1981=ELK Cloner

1986=Brain

1987=Lehigh,cascade,jerusalam virus

1988=Morris Worm

1995=Concept

1996=Larous

1998=CIH

1999=Happy 99

2000=I lone you

2001=Anna kourikova

2002=LFM-926

2004=MY Doom

2005=Samy XXA

2006=OSA/Leap-A

2007=Strom worm/Zeus

2008=Koobtack

2010=Kenzero

2013=Cryptolocker

2014=Black off

2018=Ransomware