Online phishing classification using adversarial data mining and signaling games

  • Authors:
  • Gaston L'Huillier;Richard Weber;Nicolas Figueroa

  • Affiliations:
  • Universidad de Chile, Santiago, Chile;Universidad de Chile, Santiago, Chile;Universidad de Chile, Santiago, Chile

  • Venue:
  • ACM SIGKDD Explorations Newsletter
  • Year:
  • 2010

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Abstract

In adversarial systems, the performance of a classifier decreases after it is deployed, as the adversary learns to defeat it. Recently, adversarial data mining was introduced, where the classification problem is viewed as a game mechanism between an adversary and an intelligent and adaptive classifier. Over the last years, phishing fraud through malicious email messages has been a serious threat that affects global security and economy, where traditional spam filtering techniques have shown to be ineffective. In this domain, using dynamic games of incomplete information, a game theoretic data mining framework is proposed in order to build an adversary-aware classifier for phishing fraud detection. To build the classifier, an online version of theWeighted Margin Support Vector Machines with a game theoretic prior knowledge function is proposed. In this paper, a new contentbased feature extraction technique for phishing filtering is described. Experiments show that the proposed classifier is highly competitive compared with previously proposed online classification algorithms in this adversarial environment, and promising results were obtained using traditional machine learning techniques over extracted features.