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A Novel Framework for Active Detection of HTTP Based Attacks

  • Liang Jie
  • Sun Jianwei
  • Hu Changzhen
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 100)

Abstract

Web application vulnerabilities represent a substantial portion of the security exposures of computer networks. Considering HTTP protocol is stateless, we explore the effectiveness of HTTP-session model to effectively describe http behavior. Based on the HTTP-session model and the analysis of http attack behavior, we present a novel framework to actively detect http attacks. Our method takes http requests as input and calculates anomalous probability for each session attribute and for the session as a whole as output. All the probabilities are weighted and summed up to produce final probability, and this probability is used to decide whether http session is attack or not. We demonstrate the effectiveness of the proposed methods via simulation studies using real-world web access logs. Experiments prove that our detection framework achieves high detection rates under very few false positives.

Keywords

HTTP-session anomaly detection http attacks 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Liang Jie
    • 1
  • Sun Jianwei
    • 1
  • Hu Changzhen
    • 1
  1. 1.Department of Software EngineeringBeijing Institute of TechnologyChina

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