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Patent
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G06F 11/00 (2006.01) G06F 11/22 (2006.01) G06F 11/30 (2006.01) G06F 11/32 (2006.01) G06F 11/34 (2006.01) G06F 11/36 (2006.01) G06F 12/14 (2006.01) G06F 12/16 (2006.01) G06F 15/18 (2006.01) G08B 23/00 (2006.01)
Patent
CA 2543291
According to one embodiment of the invention, a computerized method for addressing intrusion detection attacks directed at a computer includes receiving a data stream corresponding to a potential attack on the computer [304] and calculating an event risk rating for the data stream [314]. Calculating the event risk rating includes determining at least one component of the risk rating. In one embodiment, the component risk ratings are: a signature fidelity rating indicative of the likelihood the potential attack will affect the computer in the absence of knowledge regarding the computer [308], an attack relevance rating indicative of the relevance of the potential attack to the computer [310], and a target value rating indicative of the perceived value of the computer [312]. The method also includes responding to the potential attack based on the calculated risk rating.
L'invention porte dans l'une de ses exécutions sur une technique informatique de réponse aux attaques intrusives dirigées contre les ordinateurs consistant: à recevoir un flux de données correspondant à une attaque potentielle et à calculer la l'évaluation de risque de l'événement en en déterminant l'une au moins des composantes. Dans une autre exécution, les évaluations de risque de la composante sont: l'évaluation de fidélité de signature, indiquant la probabilité qu'une attaque potentielle affecte l'ordinateur en l'absence de connaissance à son sujet, l'évaluation de la certitude d'une attaque sur l'ordinateur, et l'évaluation de la valeur de la cible, c.-à-d. de l'ordinateur. La technique consiste également à répondre à l'attaque potentielle en fonction de l'évaluation calculée du risque.
Gleichauf Robert E.
Hall Michael L.
Lathem Gerald S.
Wiley Kevin L.
Cisco Technology Inc.
Gowling Lafleur Henderson Llp
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