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Coordinated and device-distributed detection of abnormal network device operation

  • US 9,342,391 B2
  • Filed: 04/02/2015
  • Issued: 05/17/2016
  • Est. Priority Date: 09/09/2014
  • Status: Active Grant
First Claim
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1. A computer-implemented method for detecting suspicious network device activity, the method comprising:

  • identifying, at an evaluating network device, a suspicious activity condition, wherein the suspicious activity condition relates to a normal activity parameter identified based on monitored activity of a monitored network device, and wherein evaluation of the condition includes evaluating network-device activity data;

    receiving, at the evaluating network device and from each of one or more other network devices, a communication that includes data corresponding to activity of a suspect network device, wherein;

    the network device and each of the one or more other network devices are part of a same network;

    the monitored network device and the suspect network device are different devices; and

    the same network is configured to facilitate reciprocal monitoring of network-device activity amongst network devices in the same network;

    determining, at the evaluating network device, that the suspicious activity condition is satisfied based on the data received from the one or more other network devices, wherein the determination indicates that a suspect network device in the same network is operating in a manner that does not conform with the normal activity parameter; and

    in response to the determination that the suspicious activity condition is satisfied, facilitating a change in operation of at least one network device in the same network, wherein the change in operation includes triggering each network device of the at least one network device to backup data stored at a location at the network device to a different location at the network device or to another network device on the same network.

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