Patents by Inventor Philip Ryan Perricone

Philip Ryan Perricone has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Semi-active probing framework to gather threat intelligence for encrypted traffic and learn about devices
    Patent number: 11570166
    Abstract: In one embodiment, a device in a network observes traffic between a client and a server for an encrypted session. The device makes a determination that a server certificate should be obtained from the server. The device, based on the determination, sends a handshake probe to the server. The device extracts server certificate information from a handshake response from the server that the server sent in response to the handshake probe. The device uses the extracted server certificate information to analyze the traffic between the client and the server.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: January 31, 2023
    Assignee: Cisco Technology, Inc.
    Inventors: David McGrew, Blake Harrell Anderson, Subharthi Paul, William Michael Hudson, Jr., Philip Ryan Perricone
  • SEMI-ACTIVE PROBING FRAMEWORK TO GATHER THREAT INTELLIGENCE FOR ENCRYPTED TRAFFIC AND LEARN ABOUT DEVICES
    Publication number: 20200244648
    Abstract: In one embodiment, a device in a network observes traffic between a client and a server for an encrypted session. The device makes a determination that a server certificate should be obtained from the server. The device, based on the determination, sends a handshake probe to the server. The device extracts server certificate information from a handshake response from the server that the server sent in response to the handshake probe. The device uses the extracted server certificate information to analyze the traffic between the client and the server.
    Type: Application
    Filed: April 17, 2020
    Publication date: July 30, 2020
    Inventors: David McGrew, Blake Harrell Anderson, Subharthi Paul, William Michael Hudson, JR., Philip Ryan Perricone
  • Semi-active probing framework to gather threat intelligence for encrypted traffic and learn about devices
    Patent number: 10666640
    Abstract: In one embodiment, a device in a network observes traffic between a client and a server for an encrypted session. The device makes a determination that a server certificate should be obtained from the server. The device, based on the determination, sends a handshake probe to the server. The device extracts server certificate information from a handshake response from the server that the server sent in response to the handshake probe. The device uses the extracted server certificate information to analyze the traffic between the client and the server.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: May 26, 2020
    Assignee: Cisco Technology, Inc.
    Inventors: David McGrew, Blake Harrell Anderson, Subharthi Paul, William Michael Hudson, Jr., Philip Ryan Perricone
  • SEMI-ACTIVE PROBING FRAMEWORK TO GATHER THREAT INTELLIGENCE FOR ENCRYPTED TRAFFIC AND LEARN ABOUT DEVICES
    Publication number: 20190190961
    Abstract: In one embodiment, a device in a network observes traffic between a client and a server for an encrypted session. The device makes a determination that a server certificate should be obtained from the server. The device, based on the determination, sends a handshake probe to the server. The device extracts server certificate information from a handshake response from the server that the server sent in response to the handshake probe. The device uses the extracted server certificate information to analyze the traffic between the client and the server.
    Type: Application
    Filed: December 20, 2017
    Publication date: June 20, 2019
    Inventors: David McGrew, Blake Harrell Anderson, Subharthi Paul, William Michael Hudson, JR., Philip Ryan Perricone