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 …

This work examines the performance gain achieved by deploying an intelligent reflecting
surface (IRS) in covert communications. To this end, we formulate the joint design of the …

This article investigates the intelligent reflecting surface (IRS)-aided multi-antenna covert
communications. In particular, with the help of an IRS, a favorable communication …

In this paper, we study covert communications between a pair of legitimate transmitter-
receiver against a watchful warden over slow fading channels. There coexist multiple …

In this letter, we develop a new framework to jointly characterize covertness and timeliness
of short-packet communications, in which a new metric named covert age of information …

Message authentication and conditional privacy preservation are two critical security issues
in vehicular ad hoc networks (VANETs), which have been extensively studied in recent …

Covert communications enable a transmitter to send information reliably in the presence of
an adversary, who looks to detect whether the transmission took place or not. We consider …

In this work, we aim to maximize the timeliness of data collection subject to a covertness
constraint in unmanned aerial vehicle (UAV)-aided Internet of Things (IoT) networks, where …

We investigate covert wireless communication in a multi-antenna relay network, where the
relay transmits its own covert message to the destination when assisting the source's …

In this paper, we consider covert communications for bistatic backscatter systems, where a
tag transmits information passively to a reader by reflecting incident carrier signals with …