07-01-2006, 01:29 PM
Quote:Image-based spam has increased twelve-fold in the past year, and a higher percentage is making it past spam filters. According to research released by security gateway provider IronPort, images are varied each time a message is sent out.
Spam images are changed each time a message is sent. The difference may be a change in the border, or the variance of one pixel, but the change is enough to get past traditional content and signature-scanning filters. These spam messages are compared to snowflakes because each one is different...
About 78 percent of this pervasive spam passes through first- and second-generation spam filters. Sprosts estimates about 30 percent of spam delivered to an individual's inbox can be this type image-based messaging...
full article: http://www.clickz.com/stats/sectors/emai...hp/3616946