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Scams » Spam And Its Types » Spam Techniques

Spam Techniques

Spammers collect e-mail addresses from customer lists, websites, newsgroups, chatrooms, and viruses which gather users' address books, and are sold to other spammers. They also make use of some techniques known as appending, image spam, blank spam and blackscatter spam.

Appending

If a marketer has database containing potential customer details, then the company has the way to send e-mail to persons who have not requested e-mail, which may enclose persons who have purposely suspended their e-mail addresses.



Image Spam

Image spam is a method in which the text of the message is stored as a JPEG or GIF image and displayed in the e-mail, which put off text based spam filters from identifying and blocking spam messages.

Blank Spam

Blank spam is spam missing a consignment advertisement. Often the message body and subject line is missing on the whole. But it fits the definition of spam since its nature as bulk and unsolicited e-mail. Blank spam may be initiated in unusual methods, either intentionally or unintentionally:
  1. Blank spam can be sent in a directory harvest hit, a type of dictionary hit for collecting valid addresses from an e-mail service provider. Since the objective in such a hit is to make use of the bounces to detach invalid addresses from the valid ones, the spammer may distribute with most parts of the header and the whole message body, and still carry out his or her goals.
  2. Blank spam may as well take place when a spammer fails to remember or else fails to include the payload when he or she sets up the spam run.
  3. Frequently blank spam headers looks cut, recommending that computer glitches may have donated to this trouble from badly written spam software to poor dispatch servers, or any difficulties that may trim header lines from the message body
  4. Various spams may look like blank when in fact it is not. An example of this is the VBS.Davinia.B e-mail worm which spreads through messages that have no subject line and shows blank, when in fact it utilizes HTML code to download other files.

Blackscatter Spam

Backscatter Spam It's an effect of e-mail spam, where e-mail servers receiving spam and other mail send bounce messages to an innocent party. This occurs since the sole message's packet sender is counterfeited to have the e-mail address of the victim. A very bulky amount of such e-mail is sent with a faked From: header, corresponding the envelope sender.

Since these messages were not requested by the recipients, are considerably alike to each other, and are delivered in mass quantities, they qualify as unwanted bulk e-mail or spam. As such, systems that produce e-mail backscatter can end up being listed on various DNSBLs and be in abuse of internet service providers' Terms of Service.