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A covert communication system under block fading channels is considered where users experience uncertainty about their channel knowledge. The transmitter seeks to hide the covert communication to a private user by exploiting a legitimate…

Information Theory · Computer Science 2017-03-08 Khurram Shahzad , Xiangyun Zhou , Shihao Yan

We study the problem of securely communicating a sequence of information bits with a client in the presence of multiple adversaries at unknown locations in the environment. We assume that the client and the adversaries are located in the…

Signal Processing · Electrical Eng. & Systems 2021-03-02 Yagiz Savas , Abolfazl Hashemi , Abraham P. Vinod , Brian M. Sadler , Ufuk Topcu

We study a regime change game in which the state and an opposition leader both observe the regime's true strength and may engage in costly communication by manipulating the mean of citizens' private signals. Each citizen then decides…

Theoretical Economics · Economics 2025-11-12 Georgy Lukyanov , Anastasia Makhmudova

This paper studies the problem of secure communication over the broadcast channel with receiver side information under the lens of individual secrecy constraints. That is, the transmitter wants to send two independent messages to two…

Information Theory · Computer Science 2015-02-26 Yanling Chen , O. Ozan Koyluoglu , Aydin Sezgin

Wireless covert channels promise to exfiltrate information with high bandwidth by circumventing traditional access control mechanisms. Ideally, they are only accessible by the intended recipient and---for regular system…

Networking and Internet Architecture · Computer Science 2015-05-06 Jiska Classen , Matthias Schulz , Matthias Hollick

Adversarial learning can learn fairer and less biased models of language than standard methods. However, current adversarial techniques only partially mitigate model bias, added to which their training procedures are often unstable. In this…

Machine Learning · Computer Science 2021-01-26 Xudong Han , Timothy Baldwin , Trevor Cohn

Modern automated surveillance techniques are heavily reliant on deep learning methods. Despite the superior performance, these learning systems are inherently vulnerable to adversarial attacks - maliciously crafted inputs that are designed…

Computer Vision and Pattern Recognition · Computer Science 2023-10-17 Kien Nguyen , Tharindu Fernando , Clinton Fookes , Sridha Sridharan

Deep learning has emerged as a strong and efficient framework that can be applied to a broad spectrum of complex learning problems which were difficult to solve using the traditional machine learning techniques in the past. In the last few…

Machine Learning · Computer Science 2018-10-02 Anirban Chakraborty , Manaar Alam , Vishal Dey , Anupam Chattopadhyay , Debdeep Mukhopadhyay

The problem of communication and state estimation is considered in the context of channels with actiondependent states. Given the message to be communicated, the transmitter chooses an action sequence that affects the formation of the…

Information Theory · Computer Science 2012-02-07 Chiranjib Choudhuri , Urbashi Mitra

Designing efficient channel access schemes for wireless communications without any prior knowledge about the nature of environments has been a very challenging issue, especially when the channel states distribution of all spectrum resources…

Networking and Internet Architecture · Computer Science 2016-11-17 Pan Zhou , Tao Jiang

This study provides a new understanding of the adversarial attack problem by examining the correlation between adversarial attack and visual attention change. In particular, we observed that: (1) images with incomplete attention regions are…

Computer Vision and Pattern Recognition · Computer Science 2023-01-02 Shangxi Wu , Jitao Sang , Kaiyuan Xu , Jiaming Zhang , Jian Yu

In this paper the secrecy problem in the cognitive statedependent interference channel is considered. In this scenario we have a primary and a cognitive transmitter-receiver pairs. The cognitive transmitter has the message of the primary…

Information Theory · Computer Science 2012-08-23 Hamid G. Bafghi , Babak Seyfe

We consider a scenario in which two reinforcement learning agents repeatedly play a matrix game against each other and update their parameters after each round. The agents' decision-making is transparent to each other, which allows each…

Artificial Intelligence · Computer Science 2021-08-23 Adrian Hutter

While semantic communication (SemCom) improves transmission efficiency by focusing on task-relevant information, it also raises critical privacy concerns. Many existing secure SemCom approaches rely on restrictive or impractical…

Cryptography and Security · Computer Science 2026-04-24 Weixuan Chen , Qianqian Yang , Shuo Shao , Shunpu Tang , Zhiguo Shi , Shui Yu

How does information regarding an adversary's intentions affect optimal system design? This paper addresses this question in the context of graphical coordination games where an adversary can indirectly influence the behavior of agents by…

Computer Science and Game Theory · Computer Science 2020-03-18 Brandon C. Collins , Philip N. Brown

We introduce the problem of determining the identity of a byzantine user (internal adversary) in a communication system. We consider a two-user discrete memoryless multiple access channel where either user may deviate from the prescribed…

Information Theory · Computer Science 2024-09-26 Neha Sangwan , Mayank Bakshi , Bikash Kumar Dey , Vinod M. Prabhakaran

We explore the additional security obtained by noise at the physical layer in a wiretap channel model setting. Security enhancements at the physical layer have been proposed recently using a secrecy metric based on the degrees of freedom…

Cryptography and Security · Computer Science 2015-09-24 W. K. Harrison , J. Almeida , S. W. McLaughlin , J. Barros

Growing at a fast pace, modern autonomous systems will soon be deployed at scale, opening up the possibility for cooperative multi-agent systems. Sharing information and distributing workloads allow autonomous agents to better perform tasks…

Machine Learning · Computer Science 2021-10-13 James Tu , Tsunhsuan Wang , Jingkang Wang , Sivabalan Manivasagam , Mengye Ren , Raquel Urtasun

This paper investigates the problem of covert communications in a heterogeneous wireless network where multiple communication modalities are used simultaneously. In this setup, a legitimate transmitter sends confidential data to its…

Signal Processing · Electrical Eng. & Systems 2026-03-13 Justin H. Kong , Terrence J. Moore , Fikadu T. Dagefu

We consider the problem of communication over a multi-path network in the presence of a causal adversary. The limited-view causal adversary is able to eavesdrop on a subset of links and also jam on a potentially overlapping subset of links…

Information Theory · Computer Science 2015-08-07 Qiaosheng Zhang , Swanand Kadhe , Mayank Bakshi , Sidharth Jaggi , Alex Sprintson