Spammers have added a fresh dimension to the fight against junk mail with the creation of image spam rendered in a pseudo 3D layout.
The use of images as opposed to simple junk messages as a way to punt penis pills, refinancing offers and the like has being going on for months. The approach is designed to fool basic spam filters and is, these days, seldom effective. In order to have any hope of success, spammers must use the computing power of compromised machines to create a uniquely modified image in each spam email. Failure to do this would enable spam filters to discard known spam images.
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Spammers have now extended this approach by using images that have been modified by adding colours, changing fonts and inserting random dots and lines so that they appear to be in “three dimensions”. The effect is even less convincing than squinting at Jaws 3D through a pair of coloured glasses. It’s also even more nauseating.