At OpenDNS our resolvers are flooded with massive amounts of Chinese domains on a daily basis, many of which security researchers are unfamiliar with. One of the projects our team was initially tasked with was to come up with a method to filter these Chinese domains out from the rest of the traffic in order to reduce the false positive rate for our classifier algorithms and to potentially detect IPs exhibiting spamming or search engine optimization (SEO) behavior. Pinyin is the official phonetic system for transcribing Mandarin pronunciations into the Latin alphabet; it is one of the ways to represent Mandarin or Cantonese on the Internet, specifically in DNS. - See more at: http://labs.opendns.com/2014/10/16/detecting-pinyin-domains/#sthash.ny0fxqBl.dpuf
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