{"id":153044,"date":"2006-12-01T00:00:00","date_gmt":"2006-12-01T00:00:00","guid":{"rendered":"https:\/\/new-cm-edgedigital.pages.dev\/en-us\/research\/msr-research-item\/detecting-stealth-web-pages-that-use-click-through-cloaking\/"},"modified":"2018-10-16T20:37:04","modified_gmt":"2018-10-17T03:37:04","slug":"detecting-stealth-web-pages-that-use-click-through-cloaking","status":"publish","type":"msr-research-item","link":"https:\/\/new-cm-edgedigital.pages.dev\/en-us\/research\/publication\/detecting-stealth-web-pages-that-use-click-through-cloaking\/","title":{"rendered":"Detecting Stealth Web Pages That Use Click-Through Cloaking"},"content":{"rendered":"<div class=\"asset-content\">\n<p>Search spam is an attack on search engines\u2019 ranking algorithms to promote spam links into top search ranking that they do not deserve. Cloaking is a well-known search spam technique in which spammers serve one page to search-engine crawlers to optimize ranking, but serve a different page to browser users to maximize potential profit. In this experience report, we investigate a different and relatively new type of cloaking, called Click-Through Cloaking, in which spammers serve non-spam content to browsers who visit the URL directly without clicking through search results, in an attempt to evade spam detection by human spam investigators and anti-spam scanners. We survey different cloaking techniques actually used in the wild and classify them into three categories: server-side, client-side, and combination. We propose a redirection-diff approach to spam detection by turning spammers\u2019 cloaking techniques against themselves. Finally, we present eight case studies in which we used redirection-diff in IP subnet-based spam hunting to defend a major search engine against stealth spam pages that use click-through cloaking.<\/p>\n<\/div>\n<p><!-- .asset-content --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Search spam is an attack on search engines\u2019 ranking algorithms to promote spam links into top search ranking that they do not deserve. Cloaking is a well-known search spam technique in which spammers serve one page to search-engine crawlers to optimize ranking, but serve a different page to browser users to maximize potential profit. In [&hellip;]<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"msr-url-field":"","msr-podcast-episode":"","msrModifiedDate":"","msrModifiedDateEnabled":false,"ep_exclude_from_search":false,"_classifai_error":"","msr-author-ordering":[{"type":"user_nicename","value":"ymwang"},{"type":"user_nicename","value":"mingma"}],"msr_publishername":"","msr_publisher_other":"","msr_booktitle":"","msr_chapter":"","msr_edition":"","msr_editors":"","msr_how_published":"","msr_isbn":"","msr_issue":"","msr_journal":"","msr_number":"MSR-TR-2006-178","msr_organization":"","msr_pages_string":"7","msr_page_range_start":"7","msr_page_range_end":"","msr_series":"","msr_volume":"","msr_copyright":"","msr_conference_name":"","msr_doi":"","msr_arxiv_id":"","msr_s2_paper_id":"","msr_mag_id":"","msr_pubmed_id":"","msr_other_authors":"","msr_other_contributors":"","msr_speaker":"","msr_award":"","msr_affiliation":"","msr_institution":"Microsoft 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