Patents by Inventor Georgios Portokalidis

Georgios Portokalidis 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).

  • Methods, systems, and media for authenticating users using multiple services
    Patent number: 10367797
    Abstract: Methods, systems, and media for automatically authenticating a user account using multiple services are provided. In accordance with some embodiments of the disclosed subject matter, methods for authenticating a user using multiple services are provided, the methods comprising: receiving, from a client device, first credentials for a target service account; authenticating the target service account based on the first credentials; issuing a redirecting request that directs the client device to at least one vouching service in response to authenticating the target service account; receiving a vouching response indicating that the client device has authenticated a vouching service account with the at least one vouching service, wherein the vouching response includes a vouching token; and providing the client device with access to the target service account in response to determining that the vouching service account is associated with the target service account.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: July 30, 2019
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Angelos D. Keromytis, Elias Athanasopoulos, Georgios Kontaxis, Georgios Portokalidis
  • METHODS, SYSTEMS, AND MEDIA FOR AUTHENTICATING USERS USING MULTIPLE SERVICES
    Publication number: 20160255067
    Abstract: Methods, systems, and media for automatically authenticating a user account using multiple services are provided. In accordance with some embodiments of the disclosed subject matter, methods for authenticating a user using multiple services are provided, the methods comprising: receiving, from a client device, first credentials for a target service account; authenticating the target service account based on the first credentials; issuing a redirecting request that directs the client device to at least one vouching service in response to authenticating the target service account; receiving a vouching response indicating that the client device has authenticated a vouching service account with the at least one vouching service, wherein the vouching response includes a vouching token; and providing the client device with access to the target service account in response to determining that the vouching service account is associated with the target service account.
    Type: Application
    Filed: August 7, 2014
    Publication date: September 1, 2016
    Inventors: Angelos D. Keromytis, Elias Athanasopoulos, Georgios Kontaxis, Georgios Portokalidis