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Latency attacks against object detection represent a variant of adversarial attacks that aim to inflate the inference time by generating additional ghost objects in a target image. However, generating ghost objects in the black-box scenario…

Computer Vision and Pattern Recognition · Computer Science 2024-04-25 Erh-Chung Chen , Pin-Yu Chen , I-Hsin Chung , Che-Rung Lee

Hierarchical federated learning (HFL) is a promising distributed deep learning model training paradigm, but it has crucial security concerns arising from adversarial attacks. This research investigates and assesses the security of HFL using…

Machine Learning · Computer Science 2024-08-21 D Alqattan , R Sun , H Liang , G Nicosia , V Snasel , R Ranjan , V Ojha

Clean-label (CL) attack is a form of data poisoning attack where an adversary modifies only the textual input of the training data, without requiring access to the labeling function. CL attacks are relatively unexplored in NLP, as compared…

Computation and Language · Computer Science 2023-06-01 Ashim Gupta , Amrith Krishna

Sensitive applications running on the cloud often require data to be stored in an encrypted domain. To run data mining algorithms on such data, partially homomorphic encryption schemes (allowing certain operations in the ciphertext domain)…

Cryptography and Security · Computer Science 2023-08-08 Tikaram Sanyashi , Bernard Menezes

Content Delivery Networks (CDNs) are designed to enhance network performance and protect against web attack traffic for their hosting websites. And the HTTP compression request mechanism primarily aims to reduce unnecessary network…

Cryptography and Security · Computer Science 2024-09-04 Ziyu Lin , Zhiwei Lin , Ximeng Liu , Zuobing Ying , Cheng Chen

Decentralized machine learning (DL) has been receiving an increasing interest recently due to the elimination of a single point of failure, present in Federated learning setting. Yet, it is threatened by the looming threat of Byzantine…

Cryptography and Security · Computer Science 2024-04-30 Ali Reza Ghavamipour , Benjamin Zi Hao Zhao , Oguzhan Ersoy , Fatih Turkmen

We consider the problem of post-quantum secure and ultra-reliable communication through a heterogeneous network consisting of multiple connections. Three performance metrics are considered: security, throughput, and in-order delivery delay.…

Information Theory · Computer Science 2021-08-17 Rafael G. L. D'Oliveira , Alejandro Cohen , John Robinson , Thomas Stahlbuhk , Muriel Médard

QUIC has rapidly evolved into a cornerstone transport protocol for secure, low-latency communications, yet its deployment continues to expose critical security and privacy vulnerabilities, particularly during connection establishment phases…

Cryptography and Security · Computer Science 2025-07-02 Jayasree Sengupta , Debasmita Dey , Simone Ferlin-Reiter , Nirnay Ghosh , Vaibhav Bajpai

Medical data is often highly sensitive in terms of data privacy and security concerns. Federated learning, one type of machine learning techniques, has been started to use for the improvement of the privacy and security of medical data. In…

Cryptography and Security · Computer Science 2022-04-19 Febrianti Wibawa , Ferhat Ozgur Catak , Salih Sarp , Murat Kuzlu , Umit Cali

Big data has been a pervasive catchphrase in recent years, but dealing with data scarcity has become a crucial question for many real-world deep learning (DL) applications. A popular methodology to efficiently enable the training of DL…

Cryptography and Security · Computer Science 2022-10-21 Roman Walch , Samuel Sousa , Lukas Helminger , Stefanie Lindstaedt , Christian Rechberger , Andreas Trügler

The growing body of literature on training-data reconstruction attacks raises significant concerns about deploying neural network classifiers trained on sensitive data. However, differentially private (DP) training (e.g. using DP-SGD) can…

Cryptography and Security · Computer Science 2025-10-29 Robert Allison , Tomasz Maciążek , Henry Bourne

Coded blockchains have acquired prominence as a promising solution to reduce storage costs and facilitate scalability. Within this class, Luby Transform (LT) coded blockchains are an appealing choice for scalability owing to the…

Information Theory · Computer Science 2025-10-23 Harikrishnan K. , J. Harshan , Anwitaman Datta

The emergence of quantum computing poses a formidable security challenge to network protocols traditionally safeguarded by classical cryptographic algorithms. This paper provides an exhaustive analysis of vulnerabilities introduced by…

Cryptography and Security · Computer Science 2024-05-08 Yaser Baseri , Vikas Chouhan , Abdelhakim Hafid

Everyone is concerned about the Internet security, yet most traffic is not cryptographically protected. The usual justification is that most attackers are only off-path and cannot intercept traffic; hence, challenge-response mechanisms…

Cryptography and Security · Computer Science 2013-05-07 Yossi Gilad , Amir Herzberg , Haya Shulman

Federated Learning (FL) enables collaborative training while keeping sensitive data on clients' devices, but local model updates can still leak private information. Hybrid Homomorphic Encryption (HHE) has recently been applied to FL to…

Cryptography and Security · Computer Science 2026-03-30 Ivan Costa , Pedro Correia , Ivone Amorim , Eva Maia , Isabel Praça

The popularity of Deep Learning (DL) makes the privacy of sensitive data more imperative than ever. As a result, various privacy-preserving techniques have been implemented to preserve user data privacy in DL. Among various…

Cryptography and Security · Computer Science 2023-08-31 Khoa Nguyen , Tanveer Khan , Antonis Michalas

We study the problem of quantum hacking, which is the procedure of quantum-information extraction from and installation on a quantum network given only partial access. This problem generalizes a central topic in contemporary physics --…

Quantum Physics · Physics 2021-06-21 Seok Hyung Lie , Yong Siah Teo , Hyunseok Jeong

Large language models (LLMs) have demonstrated immense utility across various industries. However, as LLMs advance, the risk of harmful outputs increases due to incorrect or malicious instruction prompts. While current methods effectively…

Computation and Language · Computer Science 2025-06-19 Xinyi Zeng , Yuying Shang , Jiawei Chen , Jingyuan Zhang , Yu Tian

The use of DNS over HTTPS (DoH) tunneling by an attacker to hide malicious activity within encrypted DNS traffic poses a serious threat to network security, as it allows malicious actors to bypass traditional monitoring and intrusion…

Honeypots are a well-studied defensive measure in network security. This work proposes an effective low-cost honeypot that is easy to deploy and maintain. The honeypot introduced in this work is able to handle commands in a non-standard way…

Cryptography and Security · Computer Science 2021-01-07 Daniel Schneider , Daniel Fraunholz , Daniel Krohmer