computers

viruses were mostly the product of individuals who just wanted to cause trouble, make a name for themselves by breaking things.they did it for "fun",for recognition among their peers.
while those folks are still out there i don't believe that they represent the majority of virus sources any longer. we're now seeing the "professional" virus writer emerge.


Here's how that works:

#He then sells the "services" of his network of zombies. Typically to spammers.
#The zombie network then starts sending out massive amounts of spam.
#The spammers make money because just enough people actually buy the stuff that spam is selling.
#The anti-virus companies eventually identify and block the virus that started all this.
#The virus writer writes a new virus, and the process starts all over again.