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Title: Using new edges for anomaly detection in computer networks

Creation of new edges in a network may be used as an indication of a potential attack on the network. Historical data of a frequency with which nodes in a network create and receive new edges may be analyzed. Baseline models of behavior among the edges in the network may be established based on the analysis of the historical data. A new edge that deviates from a respective baseline model by more than a predetermined threshold during a time window may be detected. The new edge may be flagged as potentially anomalous when the deviation from the respective baseline model is detected. Probabilities for both new and existing edges may be obtained for all edges in a path or other subgraph. The probabilities may then be combined to obtain a score for the path or other subgraph. A threshold may be obtained by calculating an empirical distribution of the scores under historical conditions.
Inventors:
Issue Date:
OSTI Identifier:
1368182
Assignee:
Los Alamos National Security, LLC LANL
Patent Number(s):
9,699,206
Application Number:
14/609,836
Contract Number:
AC52-06NA25396
Resource Relation:
Patent File Date: 2015 Jan 30
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING

Works referenced in this record:

Systems And Methods For A Simulated Network Attack Generator
patent-application, December 2009

Recent Advances in Intrusion Detection
book, January 2001
  • Goos, Gerhard; Hartmanis, Juris; van Leeuwen, Jan
  • Lecture Notes in Computer Science
  • DOI: 10.1007/3-540-45474-8