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Insider Threat Detection with Deep Neural Network

  • Fangfang Yuan
  • Yanan Cao
  • Yanmin Shang
  • Yanbing Liu
  • Jianlong Tan
  • Binxing Fang
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10860)

Abstract

Insider threat detection has attracted a considerable attention from the researchers and industries. Existing work mainly focused on applying machine-learning techniques to detecting insider threat. However, this work requires “feature engineering” which is difficult and time-consuming. As we know, the deep learning technique can automatically learn powerful features. In this paper, we present a novel insider threat detection method with Deep Neural Network (DNN) based on user behavior. Specifically, we use the LSTM-CNN framework to find user’s anomalous behavior. First, similar to natural language modeling, we use the Long Short Term Memory (LSTM) to learn the language of user behavior through user actions and extract abstracted temporal features. Second, the extracted features are converted to the fixed-size feature matrices and the Convolutional Neural Network (CNN) use these fixed-size feature matrices to detect insider threat. We conduct experiments on a public dataset of insider threats. Experimental results show that our method can successfully detect insider threat and we obtained AUC = 0.9449 in best case.

Keywords

Insider threat Anomaly detection Deep learning Network security 

Notes

Acknowledgement

This work was partly supported by the National Key R&D Program of China under Grant No. 2016YFB0800300, Xinjiang Uygur Autonomous Region Science and Technology Project under Grant No. 2016A030007-4, the National Natural Science Foundation of China under grant No. 61602466.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Fangfang Yuan
    • 1
    • 2
    • 3
  • Yanan Cao
    • 1
    • 3
  • Yanmin Shang
    • 1
    • 3
  • Yanbing Liu
    • 1
    • 3
  • Jianlong Tan
    • 1
    • 3
  • Binxing Fang
    • 4
  1. 1.Institute of Information EngineeringChinese Academy of SciencesBeijingChina
  2. 2.School of Cyber SecurityUniversity of Chinese Academy of SciencesBeijingChina
  3. 3.National Engineering Laboratory for Information Security TechnologiesBeijingChina
  4. 4.Institute of Electronic and Information Engineering of UESTC in GuangdongDongguanChina

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