Patents by Inventor Andrew Fu-Chung Teng

Andrew Fu-Chung Teng 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).

  • Location-based identification of potential security threat
    Patent number: 11140555
    Abstract: In one example, a firewall obtains a first network packet that indicates a first mobile country code of a mobile subscriber at a first time and a first mobile network code of the mobile subscriber at the first time. The firewall obtains a second network packet that indicates a second mobile country code of the mobile subscriber at a second time and a second mobile network code of the mobile subscriber at the second time. The firewall determines whether the first mobile country code is different from the second mobile country code or the first mobile network code is different from the second mobile network code. If so, the firewall determines whether a difference between the second time and the first time is less than a threshold difference. If so, the firewall associates the second network packet with a potential security threat.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: October 5, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Hien Thi Thai, Andrew Fu-Chung Teng, Pramod Nair, Hidde Beumer
  • LOCATION-BASED IDENTIFICATION OF POTENTIAL SECURITY THREAT
    Publication number: 20200404490
    Abstract: In one example, a firewall obtains a first network packet that indicates a first mobile country code of a mobile subscriber at a first time and a first mobile network code of the mobile subscriber at the first time. The firewall obtains a second network packet that indicates a second mobile country code of the mobile subscriber at a second time and a second mobile network code of the mobile subscriber at the second time. The firewall determines whether the first mobile country code is different from the second mobile country code or the first mobile network code is different from the second mobile network code. If so, the firewall determines whether a difference between the second time and the first time is less than a threshold difference. If so, the firewall associates the second network packet with a potential security threat.
    Type: Application
    Filed: June 18, 2019
    Publication date: December 24, 2020
    Inventors: Hien Thi Thai, Andrew Fu-Chung Teng, Pramod Nair, Hidde Beumer