An N-Gram and STF-IDF model for masquerade detection in a UNIX environment

@article{Geng2010AnNA,
  title={An N-Gram and STF-IDF model for masquerade detection in a UNIX environment},
  author={Dai Geng and Tomohiro Odaka and Jousuke Kuroiwa and Hisakazu Ogura},
  journal={Journal in Computer Virology},
  year={2010},
  volume={7},
  pages={133-142}
}
A masquerader is someone who impersonates another user and operates a computer system with privileged access. Computer security problems caused by masqueraders are serious. Although anomaly detection is considered to be the best way to detect masqueraders, due to the low probability of detection and high error rate, this method is still in the research phase. Thus far, a number of methods, such as the Support Vector Machine (SVM), the Hidden Markov Model (HMM), and the Naïve Bayes (N. Bayes… CONTINUE READING

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