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String distances and intrusion detection:Bridging the gap between formal languages and computersecurity

Published online by Cambridge University Press:  20 July 2006

Danilo Bruschi and
Giovanni Pighizzini
Danilo Bruschi
Affiliation:
Dipartimento di Informatica e Comunicazione, Università degli Studi di Milano, via Comelico, 39, 20135 Milano, Italy; bruschi@dico.unimi.it,pighizzi@dico.unimi.it
Giovanni Pighizzini
Affiliation:
Dipartimento di Informatica e Comunicazione, Università degli Studi di Milano, via Comelico, 39, 20135 Milano, Italy; bruschi@dico.unimi.it,pighizzi@dico.unimi.it
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Abstract

In this paper we analyze some intrusion detection strategiesproposed in the literature and we show that they represent thevarious facets of a well known formal languages problem: computingthe distance between a string x and a language L. Inparticular, the main differences among the various approachesadopted for building intrusion detection systems can be reduced tothe characteristics of the language L and to the notion ofdistance adopted. As a further contribution we will also show thatfrom the computational point of view all these strategies areequivalent and they are amenable to efficient parallelization.

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Type
Research Article
Information
RAIRO - Theoretical Informatics and Applications , Volume 40 , Issue 2: Alberto Bertoni: Climbing summits , April 2006, pp. 303 - 313
Copyright
© EDP Sciences, 2006

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