Same Spam, Different Image
Image spam contains little ordinary text to analyze. Instead, it uses the .gif or .jpeg image file formats hence its nomenclature.
The image itself contains the spam message in the form of text and graphics. In appearance, it is similar to an HTML email, but the image format makes it difficult for a machine to easily recognize the text.
This advanced spamming technique reached a new high of 25 percent of total spam volume in October, compared to 4.8 percent a year ago, according to IronPort Systems Latest News about IronPort Systems. That's an increase of 421 percent and it's causing major problems as these messages tend to pass through first and second generation spam filters undetected. Technology News: E-Commerce: Same Spam, Different Image
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