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This paper investigates two seller-driven black-hat online marketplaces, SEOClerks and MyCheapJobs, aiming to shed light on the services they offer as well as sellers and customers they attract. We perform a measurement-based analysis based on complete crawls of their websites and find that the vast majority of services target popular social media and(More)
Online social media allows consumers to engage with each other and to create, share, discuss and modify user-generated content in a highly interactive way. Social media platforms have therefore become critical for companies trying to gauge the pulse of consumers, help identify issues faster, receive immediate feedback on products and offering etc. An(More)
As businesses increasingly rely on social networking sites to engage with their customers, it is crucial to understand and counter reputation manipulation activities, including fraudulently boosting the number of Face-book page likes using like farms. To this end, several fraud detection algorithms have been proposed and some deployed by Facebook that use(More)
As businesses increasingly rely on social networking sites to engage with their customers, it is crucial to understand and counter reputation manipulation activities, including fraudulently boosting the number of Facebook page likes using so-called like farms. Thus, social network operators have started to deploy various fraud detection algorithms such as(More)
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