Anticipating Hidden Text Salting in Emails

  • Authors:
  • Christina Lioma;Marie-Francine Moens;Juan-Carlos Gomez;Jan Beer;Andre Bergholz;Gerhard Paass;Patrick Horkan

  • Affiliations:
  • Katholieke Universiteit Leuven, Belgium;Katholieke Universiteit Leuven, Belgium;Katholieke Universiteit Leuven, Belgium;Katholieke Universiteit Leuven, Belgium;Fraunhofer IAIS, Germany;Fraunhofer IAIS, Germany;Symantec, Ireland

  • Venue:
  • RAID '08 Proceedings of the 11th international symposium on Recent Advances in Intrusion Detection
  • Year:
  • 2008

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Abstract

Salting is the intentional addition or distortion of content, aimed to evade automatic filtering. Salting is usually found in spam emails. Salting can also be hidden in phishing emails, which aim to steal personal information from users. We present a novel method that detects hidden salting tricks as visual anomalies in text. We solely use these salting tricks to successfully classify emails as phishing (F-measure 90%).