The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 12, 2017
Filed:
Nov. 10, 2015
Nominum, Inc., Redwood City, CA (US);
Ali Fakeri-Tabrizi, San Mateo, CA (US);
Thanh Nguyen, Newark, CA (US);
Hongliang Liu, Campbell, CA (US);
Paul O'Leary, San Francisco, CA (US);
Mikael Kullberg, Stockholm, SE;
Yuriy Yuzifovich, Los Gatos, CA (US);
James Paugh, San Carlos, CA (US);
Robert S. Wilbourn, Palo Alto, CA (US);
Nominum, Inc., Redwood City, CA (US);
Abstract
A computer-implemented method for detecting anomalies in DNS requests comprises receiving a plurality of DNS requests generated within a predetermined period. The predetermined period includes a plurality of DNS data fragments. The method further includes receiving a first DNS request and selecting a plurality of second DNS requests from the plurality of DNS requests such that each of the second DNS requests is a subset of the first DNS request. The method also includes calculating a count value for each of the DNS data fragments, where each of the count values represents a number of instances the second DNS requests appear within one of the DNS data fragments. In some embodiments, the count values for each of the DNS data fragments can be normalized. The method further includes determining an anomaly trend, for example, based on determining that at least one of the count values exceeds a predetermined threshold value.