Hello Ronniem
Email that has gibberish words included or some kind of pretend story
at the end of the message is known as Hash Busting. Hash Busting is a
technique used by spammers to bypass spam filters.
?Hash busting is designed to confuse Bayesian filters, which use
statistical probability analysis to identify spam trends. Random
groups of words, or freely available text such as chapters from
Kipling's Alice in Wonderland are added to the bottom of emails so
that Bayesian filters struggle to identify spam patterns. In some
cases, this text is invisible - written in tiny one point size, for
example.?
Computing
http://www.computing.co.uk/vnunet/news/2125735/bugwatch-vi-gra-anyone
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?A hash buster is a program that generates a string of text for
insertion in a spam message so that, to a spam filter, the e-mail
appears to be a different message each time it is sent. The text might
appear in the Subject line, its From line, or after the message body,
and might either be coherent text or gibberish. The latter is
sometimes arranged in word-like formations to be less easily
detected.? http://searchexchange.techtarget.com/sDefinition/0,,sid43_gci917491,00.html
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Hash Busting:
?Random insertion of characters or words used to defeat signature based filters.?
Secure Node
http://www.securenode.com/products/products.html
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?By throwing a hundred or so random words rarely used in sales spiels
into each e-mail missive, spammers hope to thwart Bayesian filters by
making the spam appear to be personal correspondence. Incorporating
words that might be used in legitimate e-mails is also intended to
poison the checklist the filter uses, forcing it to mark, for example,
e-mails with somewhat common words like Amazon and fish as spam
indicators.?
?The strange strings of words, which usually appear at the bottom of
spam and sometimes in the subject line, are automatically added by
spammers' mass-mailer software.?
Random Acts of Spamness
http://www.landfield.com/isn/mail-archive/2004/Jan/0068.html
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From A Spammer in the Works:
?A spurious email may appear to contain a selection of random
words, a seemingly innocuous style that stream-of-consciousness poets
may have once considered a form of artistic expression. While not a
new technique, ostensibly these words are intended to be harmless
enough to slip through the statistical filters. As they do so, they
subtly affect the way that the filters adapt and evolve as they learn
about the profile of spam and non-spam for a particular recipient. By
including several words that seldom appear in the average sales pitch,
they hope to be able to pollute the filters and, over time, thwart the
Bayesian model by making their spam appear more like a personal
email.?
A Spammer in the Works
http://www.security.iia.net.au/downloads/spammer%20in%20works%20-%20an%20update%2014.5.pdf
Search criteria:
gibberish spam words
hash busting
I hope the information provided is helpful!
Best regards,
Bobbie7 |
