A software fault tree approach to requirements analysis of an intrusion detection system

Guy Helmer, Johnny Wong, Mark Slagell, Vasant Honavar, Les Miller, Robyn Lutz

Research output: Contribution to journalArticlepeer-review

63 Scopus citations


Requirements analysis for an intrusion detection system (IDS) involves deriving requirements for the IDS from analysis of the intrusion domain. When the IDS is, as here, a collection of mobile agents that detect, classify, and correlate system and network activities, the derived requirements include what activities the agent software should monitor, what intrusion characteristics the agents should correlate, where the IDS agents should be placed to feasibly detect the intrusions, and what counter-measures the software should initiate. This paper describes the use of software fault trees for requirements identification and analysis in an IDS. Intrusions are divided into seven stages (following Ruiu), and a fault subtree is developed to model each of the seven stages (reconnaissance, penetration, etc.). Two examples are provided. This approach was found to support requirements evolution (as new intrusions were identified), incremental development of the IDS, and prioritisation of countermeasures.

Original languageEnglish (US)
Pages (from-to)207-220
Number of pages14
JournalRequirements Engineering
Issue number4
StatePublished - Jan 1 2002

All Science Journal Classification (ASJC) codes

  • Software
  • Information Systems


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