Report finds that new techniques used by spammers lead to an increase in image spam by almost 40 percent
"Image spam has increased to 30-40% of the total amount of circu¬lating spam, with random noise changing with almost every image sent, said Bogdan Dumitru, BitDefender CTO. Detection rates have dropped even further, from more than 97% to almost 65-75%. Because spammers are using new techniques of image poisoning to defeat spam filters, there is a great need for security vendors to develop more reliable detection methods. BitDefender has spearheaded the efforts at fighting image spam with its new SID (Spam Image Distance) filter, which ignores text within images and instead learns by experience some common characteristics of the images.
To learn more about BitDefenders SID filter, please download a complimentary copy of the companys new whitepaper, Fighting Image Spam", at:
www.bitdefender.com/files/Main/file/BitDefender_-_Fighting_Image_Spam.pdf 
