The present invention is an adaptive secure wireless communications system and method. Generally, the present invention may be operable to address challenges and threats to a secure communication session. The secure wireless communication system of the present invention may operate one or more of the following: multiple physical-layer attributes monitoring; multiple parameter confidence testing related to transceiver (Tx-Rx) specific environment and transmitter receiver hardware characteristics; continuous and interleaved authentication; and security enhancement using dynamic adaptation of the transmission system parameters based concurrent and/or conjugated transmission of data-carrying signal and security control information. The real-time physical-layer related monitoring and interaction between transmitter and receiver, using Tx-Rx related physical environment, of the present invention may effectively reduce many wireless security threats including interception and spoofing.