  This paper explores a new secure wireless communication paradigm where the
physical layer security technology is applied to counteract both the detection
and eavesdropping attacks, such that the critical covertness and secrecy
properties of the communication are jointly guaranteed. We first provide
theoretical modeling for covertness outage probability (COP), secrecy outage
probability (SOP) and transmission probability (TP) to depict the covertness,
secrecy and transmission performances of the paradigm. To understand the
fundamental security performance under the new paradigm, we then define a new
metric - covert secrecy rate (CSR), which characterizes the maximum
transmission rate subject to the constraints of COP, SOP and TP. We further
conduct detailed theoretical analysis to identify the CSR under various
scenarios determined by the detector-eavesdropper relationships and the secure
transmission schemes adopted by transmitters. Finally, numerical results are
provided to illustrate the achievable performances under the new secure
communication paradigm.
