Detecting Stealth Web Pages That Use Click-Through Cloaking

摘要: Search spam is an attack on search engines’ ranking algorithms to promote links into top that they do not deserve. Cloaking a well-known technique in which spammers serve one page search-engine crawlers optimize ranking, but different browser users maximize potential profit. In this experience report, we investigate and relatively new type of cloaking, called Click-Through Cloaking, non-spam content browsers who visit the URL directly without clicking through results, attempt evade detection by human investigators anti-spam scanners. We survey cloaking techniques actually used wild classify them three categories: server-side, client-side, combination. propose redirection-diff approach turning spammers’ against themselves. Finally, present eight case studies IP subnet-based hunting defend major engine stealth pages use click-through cloaking.