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>Anti-Spam Technologies Review, Part 6
Anti-Spam Technologies Review - 6 URL tracking URL Tracking Technique filter messages based on specific URLs found in spam. URL-based spam is increasingly pervasive because spammers want to direct readers to a specific web site for contact information or purchasing instructions. Although spammers can introduce randomization both within and between messages, it is much harder for them to change their target URLs. Pros: They are especially effective against messages that contain few spam clues or a large amount of randomization. Cons: It's effective only for certain types of spam, especially those with a directing link in the email and thus can't become a once-for-all anti-spam solution. |