Detecting suspicious network behaviors based on domain name service failures

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United States of America Patent

PATENT NO 9245121
SERIAL NO

13963881

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Abstract

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A method for detecting a malicious node in a network. The method includes obtaining a plurality of failed domain name service (DNS) queries from the network, wherein each of the plurality of failed DNS queries is initiated from a client node of the network and comprises an effective second-level domain (eSLD) name, generating, by a computer processor and using a pre-determined clustering algorithm, a cluster from a plurality of eSLD names comprising the eSLD name of each of the plurality of failed DNS queries, wherein the cluster comprises a portion of the plurality of eSLD names that is selected based on the pre-determined clustering algorithm, determining, by the computer processor and using a pre-determined formula, a score representing statistical characteristics of the cluster, and assigning, in response to the score meeting a pre-determined criterion, a malicious status to the client node.

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Patent Owner(s)

  • NARUS, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lee, Sung-Ju Redwood City, US 70 1572
Luo, Pengkui Minneapolis, US 1 51
Nucci, Antonio San Jose, US 87 2605
Saha, Sabyasachi Sunnyvale, US 9 710
Torres, Ruben Sunnyvale, US 9 380
Zhang, Zhi-Li Eden Prairie, US 27 516

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