----- Original Message ----- 
From: "Parker at Vip conduit" <[EMAIL PROTECTED]>
To: "Accessible Devices" <[EMAIL PROTECTED]>
Sent: Saturday, September 06, 2008 8:18 PM
Subject: Accessible Devices Study Reveals Your Address May Control TheAmount 
of SPAM You Receive


If you're tired of being deluged with SPAM this article is probably worth 
reading.
The First Letter In Your Address May Determine How Much SPAM You Receive
BBC NEWS Letter lottery defines spam load
How much spam you get may depend on the first letter in your e-mail address, 
a study
reveals. The analysis, of more than 500 million junk messages, revealed 
those letters
that get more junk than average. It found that e-mail addresses starting 
with an
"A", "M" or "S" got more than 40% spam. By contrast those beginning with a 
"Q" or
"Z" got about 20%. The difference could be down to the way spammers generate 
e-mail
addresses they want to target, said the study.
Letter attack
The analysis was carried out by University of Cambridge computer scientist 
Dr. Richard
Clayton, in a bid to understand the widely noted discrepancies in the 
amounts of
junk mail or spam that different people receive. Dr. Clayton took as his 
dataset
the 550 million e-mail messages sent to customers of net service Demon 
between 1
February and 27 March 2008. Looking at the mix of messages landing in 
inboxes, Dr.
Clayton found a wide discrepancy in the amounts of junk that different 
addresses
received which seemed to hinge on their initial letters.
The most popular letters for spammers were "A", "M", "S", "R" and "P". about 
40%
of all the messages arriving in the e-mail inboxes of accounts with 
addresses that
had one of those characters as their first letter were junk. Much less 
popular were
"Q", "Z" and "Y". For these cases, spam was running at about 20% or less.
The reason for the difference could be partly explained, said Dr. Clayton, 
by the
way that spammers generate e-mail addresses to which they then send junk 
messages.
Often, he said, they carry out so-called "dictionary" attacks. In these, 
spammers
take the part of a live e-mail address in front of the "@" symbol that they 
know
is live, and add that to other net domain names to generate a new one. For 
instance,
spammers who know that there is a real person attached to [EMAIL PROTECTED] 
may try
[EMAIL PROTECTED] to see if that reaches a live account too. As a result the 
relative
abundance of names beginning with "M" compared to "Q" could explain some of 
the disparities,
as spammers would be more likely to re-use popular names and send them more 
junk.
Dr. Clayton said the research had thrown up some anomalies that needed 
further research.
For instance, he said, addresses starting with the letter "U" appear to get 
more
than 50% spam despite there being relatively few of them.
Story from BBC NEWS:
http://news.bbc.co.uk/go/pr/fr/-/2/hi/technology/7591370.stm
Published: 2008/09/01 09:40:37 GMT
© BBC MMVIII
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