Method and system for adaptive rule-based content scanners

Details Method and system for adaptive rule-based content scanners Method and system for adaptive rule-based content scanners

G - Physics

06

F

G06F 11/30 (2006.01)

Patent

CA 2578792

A method for scanning content (200), including identifying tokens within an incoming byte stream (210), the tokens being lexical constructs for a specific language, identifying patterns of tokens, generating a parse tree from the identified patterns of tokens (220), and identifying the presence of potential exploits within the parse tree, wherein said identifying tokens, identifying patterns of tokens, and identifying the presence of potential exploits are based upon a set of rules for the specific language. A system and a computer readable storage medium are also described and claimed.

L'invention concerne un procédé pour balayer un contenu, qui consiste à identifier des jetons à l'intérieur d'un flux d'octets entrants, les jetons représentant des structures lexicales pour une langue déterminée, à identifier des motifs de jetons, à générer un arbre de parsage à partir des motifs de jetons identifiés et à identifier la présence d'exploits potentiels à l'intérieur de l'arbre de parsage, lesdits jetons d'identification, des motifs d'identification des jetons et l'identification de la présence d'exploits potentiels étant basés sur un ensemble de règles correspondant à une langue déterminée. L'invention concerne une description et une revendication se rapportant à un système et à un support lisible par ordinateur correspondants.

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