Graph-Based Fraud Detection in the Face of Camouflage

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dc.contributor.authorHooi, Bryanko
dc.contributor.authorShin, Kijungko
dc.contributor.authorSong, Hyun Ahko
dc.contributor.authorBeutel, Alexko
dc.contributor.authorShah, Neilko
dc.contributor.authorFaloutsos, Christosko
dc.date.accessioned2019-03-04T10:56:06Z-
dc.date.available2019-03-04T10:56:06Z-
dc.date.created2019-03-04-
dc.date.created2019-03-04-
dc.date.created2019-03-04-
dc.date.issued2017-08-
dc.identifier.citationACM TRANSACTIONS ON KNOWLEDGE DISCOVERY FROM DATA, v.11, no.4-
dc.identifier.issn1556-4681-
dc.identifier.urihttp://hdl.handle.net/10203/250517-
dc.description.abstractGiven a bipartite graph of users and the products that they review, or followers and followees, how can we detect fake reviews or follows? Existing fraud detection methods (spectral, etc.) try to identify dense subgraphs of nodes that are sparsely connected to the remaining graph. Fraudsters can evade these methods using camouflage, by adding reviews or follows with honest targets so that they look "normal." Even worse, some fraudsters use hijacked accounts from honest users, and then the camouflage is indeed organic. Our focus is to spot fraudsters in the presence of camouflage or hijacked accounts. We propose FRAUDAR, an algorithm that (a) is camouflage resistant, (b) provides upper bounds on the effectiveness of fraudsters, and (c) is effective in real- world data. Experimental results under various attacks show that FRAUDAR outperforms the top competitor in accuracy of detecting both camouflaged and non-camouflaged fraud. Additionally, in real- world experiments with a Twitter follower-followee graph of 1.47 billion edges, FRAUDAR successfully detected a subgraph of more than 4,000 detected accounts, of which a majority had tweets showing that they used follower-buying services.-
dc.languageEnglish-
dc.publisherASSOC COMPUTING MACHINERY-
dc.titleGraph-Based Fraud Detection in the Face of Camouflage-
dc.typeArticle-
dc.identifier.wosid000416305700006-
dc.identifier.scopusid2-s2.0-85023201416-
dc.type.rimsART-
dc.citation.volume11-
dc.citation.issue4-
dc.citation.publicationnameACM TRANSACTIONS ON KNOWLEDGE DISCOVERY FROM DATA-
dc.identifier.doi10.1145/3056563-
dc.contributor.localauthorShin, Kijung-
dc.contributor.nonIdAuthorHooi, Bryan-
dc.contributor.nonIdAuthorSong, Hyun Ah-
dc.contributor.nonIdAuthorBeutel, Alex-
dc.contributor.nonIdAuthorShah, Neil-
dc.contributor.nonIdAuthorFaloutsos, Christos-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle; Proceedings Paper-
dc.subject.keywordAuthorFraud detection-
dc.subject.keywordAuthorlink analysis-
dc.subject.keywordAuthorspam detection-
dc.subject.keywordPlusNETWORKS-
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