{"id":3863,"date":"2021-09-13T15:58:52","date_gmt":"2021-09-13T13:58:52","guid":{"rendered":"https:\/\/eticasfoundation.org\/https-eticasfoundation-org-algorithms-case-netflix-customized-recommendations\/"},"modified":"2021-09-14T19:39:41","modified_gmt":"2021-09-14T17:39:41","slug":"netflix-customized-recommendations","status":"publish","type":"post","link":"https:\/\/dev.eticasfoundation.org\/es\/netflix-customized-recommendations\/","title":{"rendered":"Netflix&#8217;s database susceptible to deanonymization attacks"},"content":{"rendered":"<p><img loading=\"lazy\" width=\"800\" height=\"488\" src=\"https:\/\/eticasfoundation.org\/algorithms\/wp-content\/uploads\/2019\/10\/20-1024x625.jpg\" alt=\"\" srcset=\"https:\/\/eticasfoundation.org\/algorithms\/wp-content\/uploads\/2019\/10\/20-1024x625.jpg 1024w, https:\/\/eticasfoundation.org\/algorithms\/wp-content\/uploads\/2019\/10\/20-300x183.jpg 300w, https:\/\/eticasfoundation.org\/algorithms\/wp-content\/uploads\/2019\/10\/20-768x469.jpg 768w, https:\/\/eticasfoundation.org\/algorithms\/wp-content\/uploads\/2019\/10\/20.jpg 1280w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<\/p>\n<p>Netflix employs algorithmic processing to create profiles of users from collected metadata and to predict which content they are most likely to consume. Every time one of its 300 million users selects a series or a movie, the system gathers a host of data related to the media consumption, like clicks, pauses, and indicators that the user stopped watching, et al (Narayanan 2008). Netflix aggregates such data to fashion profiles that intuit information concerning the user.<\/p>\n<p>Even though the company has established several security mechanisms and uses proxies of users\u2019 personal data to construct their profiles, the system is quite vulnerable to deanonymization attacks. Researchers Narayanan et al. (2008) were able to break the anonymization of Netflix&#8217;s database by analyzing some proxy information provided by users. Narayanan et al.&#8217;s breakthrough evidenced a &#8220;new class of statistical deanonymization attacks against high-dimensional micro-data, such as individual preferences, recommendations, transaction records, and so on&#8221; (ibid). Using such new methods, the researchers demonstrated how sensitive information like political preferences or ethnic origin could be divulged from an anonymized database.<\/p>","protected":false},"excerpt":{"rendered":"<p>Netflix employs algorithmic processing to create profiles of users from collected metadata and to predict which content they are most likely to consume. Every time one of its 300 million users selects a series or a movie, the system gathers a host of data related to the media consumption, like clicks, pauses, and indicators that [&hellip;]<\/p>","protected":false},"author":1,"featured_media":4251,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[19],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.5.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Netflix&#039;s database susceptible to deanonymization attacks - Eticas Foundation<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dev.eticasfoundation.org\/es\/netflix-customized-recommendations\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Netflix&#039;s database susceptible to deanonymization attacks - Eticas Foundation\" \/>\n<meta property=\"og:description\" content=\"Netflix employs algorithmic processing to create profiles of users from collected metadata and to predict which content they are most likely to consume. 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