Patents by Inventor Laurentiu B. Cristofor

Laurentiu B. Cristofor 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).

  • Patent number: 11283796
    Abstract: Methods, systems, and computer program products are provided for real-time compromise detection based on behavioral analytics. The detection runs in real-time, during user authentication, for example, with respect to a resource. The probability that the authentication is coming from a compromised account is assessed. The features of the current authentication are compared with the features from past authentications of the user. After comparison, a match score is generated. The match score is indicative of the similarity of the authentication to the user's history of authentication. This score is then discretized into risk levels based on the empirical probability of compromise based on known past compromised user authentications. The risk levels may be used to detect whether user authentication is occurring via compromised credentials.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: March 22, 2022
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Maria Puertas Calvo, Lakshmi Priya Gopal, Laurentiu B. Cristofor, Pui-Yin Winfred Wong, Dana S. Kaufman
  • Publication number: 20200412717
    Abstract: Methods, systems, and computer program products are provided for real-time compromise detection based on behavioral analytics. The detection runs in real-time, during user authentication, for example, with respect to a resource. The probability that the authentication is coming from a compromised account is assessed. The features of the current authentication are compared with the features from past authentications of the user. After comparison, a match score is generated. The match score is indicative of the similarity of the authentication to the user's history of authentication. This score is then discretized into risk levels based on the empirical probability of compromise based on known past compromised user authentications. The risk levels may be used to detect whether user authentication is occurring via compromised credentials.
    Type: Application
    Filed: September 24, 2019
    Publication date: December 31, 2020
    Inventors: Maria Puertas Calvo, Lakshmi Priya Gopal, Laurentiu B. Cristofor, Pui-Yin Winfred Wong, Dana S. Kaufman
  • Patent number: 10873583
    Abstract: Methods, systems, and apparatuses in a computing device enable user access to a resource. The method includes receiving, from a user, a request for access to a resource; accessing an authentication flow for granting access to the resource; obtaining first claims for a user from a first claims provider in the authentication flow; determining a second claims provider in the authentication flow, the second claims provider having a trust relationship with the claims facilitator; directing the user to the second claims provider; receiving second claims for the user from the second claims provider; and enabling the user to access the resource in response to at least the received first and second claims.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: December 22, 2020
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Alexander T. Weinert, Caleb G. Baker, Pui-Yin Winfred Wong, Carlos Adrian Lopez Castro, Yordan I. Rouskov, Laurentiu B. Cristofor, Michael V. McLaughlin
  • Publication number: 20190089710
    Abstract: Methods, systems, and apparatuses in a computing device enable user access to a resource. The method includes receiving, from a user, a request for access to a resource; accessing an authentication flow for granting access to the resource; obtaining first claims for a user from a first claims provider in the authentication flow; determining a second claims provider in the authentication flow, the second claims provider having a trust relationship with the claims facilitator; directing the user to the second claims provider; receiving second claims for the user from the second claims provider; and enabling the user to access the resource in response to at least the received first and second claims.
    Type: Application
    Filed: January 9, 2018
    Publication date: March 21, 2019
    Inventors: Alexander T. Weinert, Caleb G. Baker, Pui-Yin Winfred Wong, Carlos Adrian Lopez Castro, Yordan I. Rouskov, Laurentiu B. Cristofor, Michael V. McLaughlin