System and methods for detecting intrusions in a computer system by monitoring operating system registry accesses

  • US 7,448,084 B1
  • Filed: 01/27/2003
  • Issued: 11/04/2008
  • Est. Priority Date: 01/25/2002
  • Status: Active Grant
First Claim
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1. A method for detecting intrusions in the operation of a computer system comprising:

  • (a) gathering features from records of normal processes that access the operating system registry;

    (b) generating a probabilistic model of normal computer system usage based on the features and determining the likelihood of observing an event that was not observed during the gathering of features from the records of normal processes; and

    (c) analyzing features from a record of a process that accesses the operating system registry to detect deviations from normal computer system usage to determine whether the access to the operating system registry is an anomaly.

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