Microsoft Technology Licensing, LLC

Christopher N Peterson

Ismail Cem Paya

Trevin M Chow

Wei Jiang

Wei-Quiang Michael Guo

Iulian Doroftei Calinov

Danpo Zhang

Gilbert Martin McQuillan

Sanjeev M Nagvekar

Jeff Steinbok

Protecting a user against web spoofing in which the user confirms the authenticity of a web page prior to submitting sensitive information such as user credentials (e.g., a login name and password) via the web page. The web page provides the user with an identifiable piece of information representing a shared secret between the user and the server. The user confirms the correctness of the shared secret to ensure the legitimacy of the web page prior to disclosing any sensitive information via the web page.

Authentication of a server by a client to prevent fraudulent user interfaces

Distinctively marking authentication forms and preemptively searching for and detecting unauthorized authentication forms. The invention includes creating a sign-in module having an identifying characteristic and presenting the created sign-in module to the user via a user interface. The invention also includes searching a plurality of web pages for the identifying characteristic and determining whether each of the searched web pages is authorized to include the created sign-in module.

Marking and identifying web-based authentication forms

Secure site-to-site transactional communication between at least two network servers coupled to a data communication network, including secure registration by an authentication server associated with a multi-site user authentication system. A network server receives a request via a browser f of a client computer. In response, the network server initiates a transaction with the authentication server and defines a data structure, such as a query string, associated with the transaction. The network server also generates a digital signature of the data structure and then adds it to the data structure before directing the client computer from the network server to the authentication server with the data structure and the added digital signature. The network server also adds an index to the data structure. The index is associated with the transaction and unique, per transaction, to the network server initiating the transaction.

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North Bend, WA, United States of America

Christopher N Peterson