US Patent 9967260 Enhanced authentication security

Systems, methods, and apparatus, including computer-readable storage media storing executable instructions, for enhanced authentication security. In some implementations, an authentication request associated with a first communication session is received. A second communication session having parameter values derived from parameter values for the first communication session. An authorization code corresponding to the second communication session is generated. The first communication session as closed. The authentication code is provided to the device in response to the authentication request.