Cleanfeed (Usenet spam filter)
Encyclopedia
Cleanfeed is a spam
Newsgroup spam
Newsgroup spam is a type of spam where the targets are Usenet newsgroups.Spamming of Usenet newsgroups actually pre-dates e-mail spam. The first widely recognized Usenet spam was posted on 18 January 1994 by Clarence L. Thomas IV, a sysadmin at Andrews University...

 filter for use with Usenet
Usenet
Usenet is a worldwide distributed Internet discussion system. It developed from the general purpose UUCP architecture of the same name.Duke University graduate students Tom Truscott and Jim Ellis conceived the idea in 1979 and it was established in 1980...

 news groups. As well as blocking spam, it is also able to block binary image
Binary image
A binary image is a digital image that has only two possible values for each pixel. Typically the two colors used for a binary image are black and white though any two colors can be used. The color used for the object in the image is the foreground color while the rest of the image is the...

 posts in non-binary news groups and HTML
HTML
HyperText Markup Language is the predominant markup language for web pages. HTML elements are the basic building-blocks of webpages....

 posts. It acts by looking for repeated patterns and duplicate messages, and is able to identify known spamming sites and domains. It is published under the Artistic License
Artistic License
The Artistic License refers most commonly to the original Artistic License , a software license used for certain free and open source software packages, most notably the standard Perl implementation and most CPAN modules, which are dual-licensed under the Artistic License and the GNU General Public...

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Cleanfeed was originally developed and maintained by Jeremy Nixon and later by Marco d'Itri, with the last formal update being released on 5th Aug 2001. A beta release was made available on 1 May 2002 and is the recommended version to deploy. In 2007 Steven Crook began producing a series of updates, initially designed to counter Hipcrime
Hipcrime (Usenet)
HipCrime refers both to the screenname of a Usenet user and software application distributed by, and presumably written by, this individual. The name derives from a neologism in the John Brunner science fiction novel Stand on Zanzibar....

 floods. Later releases include a number of new features and patches
Patch (computing)
A patch is a piece of software designed to fix problems with, or update a computer program or its supporting data. This includes fixing security vulnerabilities and other bugs, and improving the usability or performance...

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The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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