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:
Nov. 22, 2011

Filed:

Mar. 21, 2005
Applicants:

Paul Robert Barford, Madison, WI (US);

Jonathon Thomas Giffin, Madison, WI (US);

Somesh Jha, Madison, WI (US);

Vinod Trivandrum Yegneswaran, Foster City, CA (US);

Inventors:

Paul Robert Barford, Madison, WI (US);

Jonathon Thomas Giffin, Madison, WI (US);

Somesh Jha, Madison, WI (US);

Vinod Trivandrum Yegneswaran, Foster City, CA (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 9/00 (2006.01); G06F 15/16 (2006.01); G06F 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An automatic technique for generating signatures for malicious network traffic performs a cluster analysis of known malicious traffic to create a signature in the form of a state machine. The cluster analysis may operate on semantically tagged data collected by connection or session and normalized to eliminate protocol specific features. The signature extractor may generalize the finite-state machine signatures to match network traffic not previously observed.


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