A CDE Definition
(1) See Web spam.
(2) Email that is not requested. Also called "junk email," "gray mail," "unsolicited commercial email" (UCE) and "unsolicited bulk email" (UBE), the term is both a noun (the email message) and a verb (to send it). Spam is mostly used to advertise products and sometimes to broadcast political or social commentary.
The term was supposedly coined from a Monty Python comedy sketch in the early 1970s, in which every meal in a restaurant contained SPAM, Hormel's processed meat (in England in World War II, SPAM was always available while other foods were rationed). Spam may also be an acronym for "sales promotional advertising mail" or "simultaneously posted advertising message."
A Social Plague
Like viruses, spam has become a scourge on the Internet as more than 200 billion unwanted messages are transmitted daily. Unfortunately, as an advertising medium, spam produces results (see below). In order to reduce spam for their customers, ISPs have added an enormous number of servers that do only filtering (see spam filter).
On January 1, 2004, the CAN-SPAM act became law in the U.S., which provides severe penalties for spammers, if they can be located (see CAN-SPAM). See image spam, SPIM, SPIT, mobile phone spam, form spam, mail bomb, Joe Job, SPF, letter bomb, spamdexing, Blacklist of Internet Advertisers, munging, RBL, ROKSO, MAPS, spam relay, spam trap, botnet, rogue site and opt-in.
Why Do They Do It?Simple math. Suppose that out of 4,000 spam messages, one person buys something, and the spammer makes USD $1. If two million spams were sent that day, the spammer made $500, and the job took a half hour to set up. A few hours per week could yield $100,000 a year. Is that enough incentive for techie teenagers, or would they rather go back to their paper routes? Of course, consistent revenue is not guaranteed, but there is ample motivation.
Filters Create Even More Spam
As spam filtering becomes more sophisticated, spammers send even more spam to make the same profit, but email address lists can be purchased for very little or hijacked. There is a thriving business selling lists to spammers as well as lists of compromised computers (see zombie). There are even spam service providers that will do all the work (gotta love that entrepreneurial spirit!).
Easy to Rationalize
Spammers justify their existence by citing the huge amount of physical junk mail sent via the postal system, wasting trees and other resources. They also claim advertisers have been polluting the environment with radio, TV, bus and billboard ads for decades. A slight point perhaps, but a weak one.
Nevertheless, a standard for authenticating email could eliminate most spam. Unfortunately, that can take years to implement worldwide (see email authentication).
From the Horse's Mouth
Before/After Your Search Term
|junk application||just a bunch of disks|
|junk box||just enough operating system|
Terms By Topic
Click any of the following categories for a list of fundamental terms.