Pornographic Image Spam

Image spam on the whole is on the decline, and stock pump-and-dump has all but disappeared. But image spam hasn’t been eliminated altogether. Lately our spam detection center has seen a significant increase in pornographic image spam (the URLs are part of the picture), as well as “cut” image spam. The cut images appear to be a mistake by the spammers, since there are additional images attached to the messages, and the way the message appears doesn’t communicate anything but the nonsense anti-Bayesian text at the bottom of the mail message.