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:
Dec. 15, 2020

Filed:

Jun. 25, 2018
Applicant:

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

Inventors:

Blake Harrell Anderson, SanJose, CA (US);

Chris Allen Shenefiel, Williamsburg, VA (US);

David McGrew, Poolesville, MD (US);

Robert M. Waitman, Suffern, NY (US);

Assignee:

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

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); G06N 20/00 (2019.01);
U.S. Cl.
CPC ...
H04L 63/20 (2013.01); H04L 63/10 (2013.01); H04L 63/1416 (2013.01); H04L 63/166 (2013.01); G06N 20/00 (2019.01); H04L 63/145 (2013.01); H04L 63/1458 (2013.01);
Abstract

In one embodiment, a service that monitors a network obtains file characteristic data of a file stored on a first endpoint in the network. The service infers characteristics of encrypted content within encrypted traffic in the network between the first endpoint and a second endpoint, by applying a machine learning-based classifier to traffic data regarding the encrypted traffic session. The service compares the file characteristic data of the file to the inferred content characteristics of the encrypted content within the encrypted traffic, to detect the file within the encrypted traffic. The service enforces a network policy in the network, based on the detection of the file within the encrypted traffic.


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