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.

Date of Patent:
Feb. 25, 2014

Filed:

Aug. 31, 2010
Applicants:

Chui-tin Yen, San Jose, CA (US);

Saumyavapuh Lugani, San Jose, CA (US);

Snigdhendu Mukhopadhyay, San Jose, CA (US);

Kuntal Daftary, San Jose, CA (US);

Inventors:

Chui-Tin Yen, San Jose, CA (US);

Saumyavapuh Lugani, San Jose, CA (US);

Snigdhendu Mukhopadhyay, San Jose, CA (US);

Kuntal Daftary, San Jose, CA (US);

Assignee:

Cisco Technology, Inc., San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method is disclosed for distributed detection of botnets via a plurality of sensors on a network. According to embodiments, DNS information, including domain names and addresses, is received at a sensor, the number of unique subnets corresponding to a domain name is determined and an alert is sent to other sensors when the number of unique subnets exceeds a first threshold. Other embodiments are also disclosed.


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