Worms spread mainly through unsecured networks,p2p applications and shared folders.
b) What is the motivation of the hackers?
For kicks, for fame and most commonly for financial gain.
c) What is adware?
It is a program which pops up advertisements when you try to link to a site.
d) What is spam?
It is a unsolicited e-mail.
e) What are common categories of spam?