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We consider the problem of a graph subjected to adversarial perturbations, such as those arising from cyber-attacks, where edges are covertly added or removed. The adversarial perturbations occur during the transmission of the graph between…

密码学与安全 · 计算机科学 2024-12-19 Saif Eddin Jabari

In this paper, we consider the problem of distributed Bayesian detection in the presence of Byzantines in the network. It is assumed that a fraction of the nodes in the network are compromised and reprogrammed by an adversary to transmit…

信息论 · 计算机科学 2018-07-17 Bhavya Kailkhura , Yunghsiang S. Han , Swastik Brahma , Pramod K. Varshney

Recent years have seen the emergence of decentralized wireless networks consisting of nodes hosted by many individuals and small enterprises, reawakening the decades-old dream of open networking. These networks have been deployed in an…

密码学与安全 · 计算机科学 2022-10-24 Peiyao Sheng , Nikita Yadav , Vishal Sevani , Arun Babu , SVR Anand , Himanshu Tyagi , Pramod Viswanath

Smart grids are exposed to passive eavesdropping, where attackers listen silently to communication links. Although no data is actively altered, such reconnaissance can reveal grid topology, consumption patterns, and operational behavior,…

密码学与安全 · 计算机科学 2026-05-11 Bochra Al Agha , Razane Tajeddine

Neighbourhood watch is a concept that allows a community to distribute a complex security task in between all members. Members of the community carry out individual security tasks to contribute to the overall security of it. It reduces the…

密码学与安全 · 计算机科学 2024-07-22 Benjamin Förster , Peter Langendörfer , Thomas Hinze

Orthogonal blinding based schemes for wireless physical layer security aim to achieve secure communication by injecting noise into channels orthogonal to the main channel and corrupting the eavesdropper's signal reception. These methods,…

密码学与安全 · 计算机科学 2020-02-19 Yanjun Pan , Yao Zheng , Ming Li

Popular blockchains today have hundreds of thousands of nodes and need to be able to support sophisticated scaling solutions$\unicode{x2013}$such as sharding, data availability sampling, and layer-2 methods. Designing secure and efficient…

网络与互联网体系结构 · 计算机科学 2025-04-25 Yunqi Zhang , Shaileshh Bojja Venkatakrishnan

Deployment of sensor network in hostile environment makes it mainly vulnerable to battery drainage attacks because it is impossible to recharge or replace the battery power of sensor nodes. Among different types of security threats, low…

网络与互联网体系结构 · 计算机科学 2012-03-02 Tapalina Bhattasali , Rituparna Chaki , Sugata Sanyal

We introduce the paradigm of validated decentralized learning for undirected networks with heterogeneous data and possible adversarial infiltration. We require (a) convergence to a global empirical loss minimizer when adversaries are…

机器学习 · 计算机科学 2024-05-14 Mayank Bakshi , Sara Ghasvarianjahromi , Yauhen Yakimenka , Allison Beemer , Oliver Kosut , Joerg Kliewer

Mobile ad-hoc networks(MANET) is the collection of mobile nodes which are self organizing and are connected by wireless links where nodes which are not in the direct range communicate with each other relying on the intermediate nodes. As a…

网络与互联网体系结构 · 计算机科学 2014-12-22 Deepika Dua , Atul Mishra

We design short blocklength codes for the Gaussian wiretap channel under information-theoretic security guarantees. Our approach consists in decoupling the reliability and secrecy constraints in our code design. Specifically, we handle the…

信息论 · 计算机科学 2023-01-24 Vidhi Rana , Remi A. Chou

Security protocols are often found to be flawed after their deployment. We present an approach that aims at the neutralization or mitigation of the attacks to flawed protocols: it avoids the complete dismissal of the interested protocol and…

密码学与安全 · 计算机科学 2014-05-28 Michele Peroli , Luca Viganò , Matteo Zavatteri

We consider the level of information security provided by random linear network coding in network scenarios in which all nodes comply with the communication protocols yet are assumed to be potential eavesdroppers (i.e. "nice but curious").…

信息论 · 计算机科学 2007-07-13 Luísa Lima , Muriel Médard , João Barros

Wireless networks are vulnerable to Sybil attacks, in which a malicious node poses as many identities in order to gain disproportionate influence. Many defenses based on spatial variability of wireless channels exist, but depend either on…

密码学与安全 · 计算机科学 2014-03-25 Yue Liu , David R. Bild , Robert P. Dick , Z. Morley Mao , Dan S. Wallach

The problem of cross-platform binary code similarity detection aims at detecting whether two binary functions coming from different platforms are similar or not. It has many security applications, including plagiarism detection, malware…

密码学与安全 · 计算机科学 2018-07-30 Xiaojun Xu , Chang Liu , Qian Feng , Heng Yin , Le Song , Dawn Song

This paper aims to maximize algebraic connectivity of networks via topology design under the presence of constraints and an adversary. We are concerned with three problems. First, we formulate the concave maximization topology design…

最优化与控制 · 数学 2017-11-15 Tor Anderson , Chin-Yao Chang , Sonia Martinez

In our proposed model, the route selection is a function of following parameters: hop count, trust level of node and security level of application. In this paper, to focus on secure neighbor detection, trust factor evaluation, operational…

密码学与安全 · 计算机科学 2010-04-13 Sudhakar Sengan , S. Chenthur Pandian

The AI Control research agenda aims to develop control protocols: safety techniques that prevent untrusted AI systems from taking harmful actions during deployment. Because human oversight is expensive, one approach is trusted monitoring,…

密码学与安全 · 计算机科学 2026-02-12 Ashwin Sreevatsa , Sebastian Prasanna , Cody Rushing

In wiretap model of secure communication the goal is to provide (asymptotic) perfect secrecy and reliable communication over a noisy channel that is eavesdropped by an adversary with unlimited computational power. This goal is achieved by…

密码学与安全 · 计算机科学 2014-09-05 Pengwei Wang , Reihaneh Safavi-Naini

A network of observers is considered, where through asynchronous (with bounded delay) communications, they cooperatively estimate the states of a Linear Time-Invariant (LTI) system. In such a setting, a new type of adversary might affect…

密码学与安全 · 计算机科学 2022-08-30 Mostafa Safi