On the Internet, the term spam refers to unwanted
messages posted to newsgroups or sent to a list of users
through e-mail.
• Most obnoxious form of spam
– unwanted commercial advertising.
– chain letters.
• Spamming has become so pervasive that it’s estimated that
unwanted messages account for 5 to 30% of the 15 million
messages received by America Online subscribers each day.
• Best way to Fight it – complain to spammer’s Internet
provider