Patent attributes
A network-based multi-factor authentication approach is provided. A request to access a protected network resource and user credentials are received from a client by an application server hosting the resource. Attributes associated with the request are obtained. After determining the credentials are valid, the access attributes are provided to an authentication server. A first OTP is generated by the authentication server. The client is caused to seek confirmation from the user regarding the request and the associated attributes, by sending a push notification to the client. Responsive to authentication of the user to an OTP generator application running on the client via a biometric sensor or a PIN associated with the client: (i) a second OTP is generated by the OTP generator; and (ii) the application server is caused to grant the request by the OTP generator sending the second OTP to the application server or to the authentication server.