\begin{thebibliography}{10}

\bibitem{templeton2003}
Brad Templeton.
\newblock Origin of the term "spam" to mean net abuse.
\newblock {\em Essays on Junk E-mail (Spam)}, 2003.
\newblock Article available at http://www.templetons.com/brad/spamterm.html.

\bibitem{theregister2004}
John Leyden.
\newblock Two thirds of emails now spam: official.
\newblock {\em The Register}, 2004.
\newblock MessageLabs report cited in article on The Register -
  http://www.theregister.co.uk/2004/05/25/spam\_deluge/.

\bibitem{radicati2003}
The~Radicati Group.
\newblock Anti-virus, anti-spam and content filtering market trends, 2003-2007,
  2003.
\newblock Cited in article: Spam will cost business \$20.5bn this year -
  http://www.vnunet.com/news/1141508.

\bibitem{for-vivo}
Tom Fawcett.
\newblock In-vivo spam filtering: A challenge problem for data mining. (section
  2.4).
\newblock http://www.hpl.hp.com/personal/Tom\_Fawcett/papers/spam-KDDexp.pdf.

\bibitem{exim}
Exim MTA, using DNS Block Lists - http://www.exim.org/howto/rbl.html.

\bibitem{spamcopisharmful}
Jeremy Howard.
\newblock Why the spamcop blocking list is harmful, 2003.
\newblock Available from http://jhoward.fastmail.fm/spamcop.html.

\bibitem{mapssite}
Mail Abuse Prevention System (MAPS), official site - www.mail-abuse.com.

\bibitem{zamudio2003}
Adalberto Zamudio.
\newblock What it is, how it can affect us, and how to deal with spam., 2003.
\newblock http://www.giac.org/practical/GSEC/Adalberto\_Zamudio\_GSEC.pdf.

\bibitem{piquepaille2003}
Roland Piquepaille.
\newblock Why blacklisting spammers is a bad idea, 2003.
\newblock Available at
  http://radio.weblogs.com/0105910/categories/sidebars/2003/11/09.html.

\bibitem{rutgers-statistics}
David~Madigan Rutgers.
\newblock Statistics and the war on spam.
\newblock {\em Statistics, A Guide to the Unknown}, 2003.

\bibitem{lewis94comparison}
David~D. Lewis and Marc Ringuette.
\newblock A comparison of two learning algorithms for text categorization.
\newblock In {\em Proceedings of {SDAIR}-94, 3rd Annual Symposium on Document
  Analysis and Information Retrieval}, pages 81--93, Las Vegas, US, 1994.

\bibitem{thunderbird}
Mozilla, 2004.
\newblock More information of the Mozilla Thunderbird email client is available
  from http://www.mozilla.org/products/thunderbird/.

\bibitem{spamassasin}
SpamAssasin, 2004.
\newblock SpamAssasin is an extensible server side email filter. More
  information available from http://spamassassin.apache.org.

\bibitem{spamholenet}
Spamhole, The Fake Open SMTP Relay - http://www.spamhole.net.

\bibitem{vipulsrazor}
Vipul~Ved Prakash, 2004.
\newblock Vipul's Razor is a distributed, collaborative, spam detection and
  filtering network - http://razor.sourceforge.net.

\bibitem{eudirective2002}
European Union, 2002.
\newblock The Full text of the European Union Directive on Privacy and
  Electronic Communications is available at
  http://europa.eu.int/eur-lex/en/index.html.

\bibitem{insourced2004}
inSourced, 2004.
\newblock EU states slated for not enforcing anti-spam laws -
  http://www.in-sourced.com/article/articleview/1565/1/1/.

\bibitem{canspam2003}
CAN-SPAM, 2003.
\newblock Full text of the CAN-SPAM act available from the US Library of
  Congress at http://thomas.loc.gov/.

\bibitem{mccollum2004}
Tim McCollum, 2004.
\newblock USA Tries to Can Spam - Article available at
  http://www.theiia.org/itaudit/index.cfm?fuseaction=forum\&fid=5486.

\bibitem{wired-canspam}
Amit Asaravala.
\newblock With this law, you can spam.
\newblock {\em Wired News}, 2003.
\newblock Available from
  http://www.wired.com/news/business/0,1367,62020,00.html?tw=wn\_story\_relate%
d.

\bibitem{mou}
Memorandum of understanding on mutual enforcement assistance in commercial
  email matters - http://www.ftc.gov/os/2004/07/040630spammoutext.pdf.

\bibitem{unituantispam}
ITU Activities on Countering Spam -
  http://www.itu.int/osg/spu/spam/index.phtml.

\bibitem{spamhausattack2003}
Spamhaus.
\newblock Virus and ddos attacks on spamhaus., 2003.
\newblock A catalogue of varied attacks on the Spamhaus system -
  http://www.spamhaus.org/cyberattacks/.

\bibitem{registerddos}
John Leyden.
\newblock Sobig linked to ddos attacks on anti-spam sites.
\newblock {\em The Register}, 2003.
\newblock Monkeys.com, Compu.net and the SPEWS blocklist closed because of dDoS
  attacks launched by the SoBig worm -
  http://www.theregister.co.uk/2003/09/25/sobig\_linked\_to\_ddos\_attacks/.

\bibitem{cassidy-can1995}
Kyle Cassidy and A.~Michael Berman.
\newblock Can you trust your email?
\newblock In {\em Proceedings of the Eastern Small College Computing
  Conference}, New Rochelle, NY, US, 1995.

\bibitem{sandvine2004}
Sandvine.
\newblock Trend analysis: Spam trojans and their impact on broadband service
  providers, 2004.
\newblock Report available from http://www.sandvine.com/.

\bibitem{lurhq2003}
LURHQ, 2003.
\newblock The Reverse-Proxy Spam Trojan, Migmaf, is described in detail at
  http://www.lurhq.com/migmaf.html.

\bibitem{hussain03framework}
A.~Hussain, J.~Heidemann, and C.~Papadopoulos.
\newblock A framework for classifying denial of service attacks.
\newblock In {\em Proceedings of ACM SIGCOMM 2003}, Karlsruhe, Germany, 2003.

\bibitem{clarke01freenet}
Ian Clarke, Oskar Sandberg, Brandon Wiley, and Theodore~W. Hong.
\newblock Freenet: {A} distributed anonymous information storage and retrieval
  system.
\newblock {\em Lecture Notes in Computer Science}, 2009:46, 2001.

\bibitem{lancellotti-scalable}
Riccardo Lancellotti, Bruno Ciciani, and Michele Colajanni.
\newblock A scalable architecture for cooperative web caching, 2002.
\newblock http://weblab.ing.unimo.it/papers/networking2002.pdf.

\bibitem{mcdowell2004}
Mindi McDowell.
\newblock Understanding denial-of-service attacks, 2004.
\newblock Available from http://www.uscert.gov/cas/tips/ST04-015.html.

\bibitem{distribnet}
Distributed.net was one of the earliest projects to harness the combined
  computing power of 1000s of nodes across the Internet in order to solve
  various complex problems - www.distributed.net.

\end{thebibliography}