Information security has always been a critical issue in wireless networks. Apart from other
secure techniques, covert communication emerges as a potential solution to security for …

Physical layer covert communication is a crucial secure communication technology that
enables a transmitter to convey information covertly to a recipient without being detected by …

In this paper, we investigate a covert cooperative cognitive radio (CCCR) system, where
multiple primary transmitters (PTs) transmit information with the aid of multiple secondary …

Covert communications hide the information transmission from a watchful adversary (Willie)
while ensuring a satisfactory decoding performance at a legitimate receiver (Bob). In this …

Covert channels in blockchain networks achieve undetectable and reliable communication,
while transactions incorporating secret data are perpetually stored on the chain, thereby …

In this work, we consider the optimality of signalling for covert sensing, where a legitimate
receiver intends to estimate unknown variables based on the received signals from a …