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Image spam doubles spam file size.


SoftScan have announced that the average size of a spam E-mail that is not requested. Also known as "unsolicited commercial e-mail" (UCE), "unsolicited bulk e-mail" (UBE), "gray mail" and just plain "junk mail," the term is both a noun (the e-mail message) and a verb (to send it).  message has increased by 77% since September last year and continues to steadily grow. SoftScan attributes the enlargement enlargement,
n an increase in size.

enlargement, Dilantin,
n.pr See hyperplasia, gingival, Dilantin.

enlargement, idiopathic,
n
 of file size to the noticeable rise in image spam An e-mail advertisement in the form of an image in the message rather than text in order to avoid detection as spam. Spam filters typically analyze words in a message, which is relatively fast, but scanning images with optical character recognition (OCR) to extract the text is slow.  in recent months and warns that this will add to the cost managing email for some organisations that have to scale-up bandwidth and storage requirements to meet demands.

Since September last year individual spam emails have increased from an average of 6.62kb to 11.76kb. Although still relatively small in size, the sheer volume of spam that many businesses receive means that even only a slight rise can have a significant effect. Organisations that stop spam at their email servers See mail server.  still have to pay for the bandwidth to receive it and depending on how their email back-up is configured con·fig·ure  
tr.v. con·fig·ured, con·fig·ur·ing, con·fig·ures
To design, arrange, set up, or shape with a view to specific applications or uses:
 storage costs may rise too if spam is included in the archive.

"Spam is no longer just an issue of user productivity," comments SoftScan. "The growth in file size combined with the increasing volume of spam now means that many different aspects from network administration to internet bandwidth are affected. Email file size is going to become a real headache for businesses, particularly if spammers start to use other types of medium such as audio or video files once the tactic of image spare no longer works against the majority of filters."

Spammers use images for a variety of reasons from avoiding detection to making their message more attractive to potential buyers. The first junk emails that used images were just graphics attached to an email, next came embedded Inserted into. See embedded system.  coloured backgrounds and more recently the backgrounds have change to variety of different colours in the hope that they will fool scanning techniques.

Image spam is most frequently used with 'pump and dump' spam, which tries to tempt tempt  
v. tempt·ed, tempt·ing, tempts

v.tr.
1. To try to get (someone) to do wrong, especially by a promise of reward.

2.
 the user to buy particular shares in the knowledge of a 'hot tip'. But no sooner have enough people bought the shares, then the spammer sells theirs for a profit and the share price collapses.

www.sofiscan.co.uk
COPYRIGHT 2007 A.P. Publications Ltd.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2007, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Title Annotation:Security News and Products
Publication:Database and Network Journal
Date:Apr 1, 2007
Words:344
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