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spambot


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DEFINITION - A spambot is a program designed to collect, or harvest, e-mail addresses from the Internet in order to build mailing lists for sending unsolicited e-mail, also known as spam. A spambot can gather e-mail addresses from Web sites, newsgroups, special-interest group (SIG) postings, and chat-room conversations. Because e-mail addresses have a distinctive format, spambots are easy to write.

A number of legislators in the U.S. are reported to be devising laws that would outlaw the spambot. A number of programs and approaches have been devised to foil spambots. One such technique is known as munging, in which an e-mail address is deliberately modified so that a human reader can decode it but a spambot cannot. This has led to the evolution of sophisticated spambots that can recover e-mail addresses from character strings that appear to be munged.

The term spambot is sometimes used in reference to a program designed to prevent spam from reaching the subscribers of an Internet service provider (ISP). Such programs are more often called e-mail blockers or filters. Occasionally, such a blocker may inadvertently prevent a legitimate e-mail message from reaching a subscriber. This can be prevented by allowing each subscriber to generate a whitelist, or a list of specific e-mail addresses the blocker should let pass.

Learn more about Spam and virus protection
Securing your Exchange Server 2007 journaling archives: With work, journaling can be used to archive email in Exchange Server 2007. Get an understanding of how to create a tamper-resistant journaling mailbox.
Microsoft Exchange Server security dos and don'ts: Securing Exchange Server against spam and viruses is a challenge. Follow these security practices to protect Exchange from various email security threats.
Controlling spam in Exchange 2007 at the edge transport server level: There are many ways to control spam and viruses in Exchange 2007. Do you know how they work? Eliminating spam at the right server level is essential.
Securing your Exchange Server 2007 journaling archives: With work, journaling can be used to archive email in Exchange Server 2007. Get an understanding of how to create a tamper-resistant journaling mailbox.
Microsoft Exchange Server security dos and don'ts: Securing Exchange Server against spam and viruses is a challenge. Follow these security practices to protect Exchange from various email security threats.
Secure Edge Transport servers using the Security Configuration Wizard: Find out how to extend Windows Server 2003's Security Configuration Wizard in Exchange 2007 to protect Edge Transport servers from email viruses and spam.
The six-layered secret of effective Exchange Server email filtering: Discover the six key message-filtering layers that best block spam and viruses and keep unwanted email out of your Exchange 2003 or Exchange 2007 system.

LAST UPDATED: 21 Mar 2005

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More resources from around the web:
- Neil Gunton describes his experiences with spambots.
- Mark Pilgrim offers advice on spambot blocking.





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