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Backdoors and poisoning attacks are a major threat to the security of machine-learning and vision systems. Often, however, these attacks leave visible artifacts in the images that can be visually detected and weaken the efficacy of the…

Cryptography and Security · Computer Science 2020-03-20 Erwin Quiring , Konrad Rieck

Visual object tracking (VOT) has been widely adopted in mission-critical applications, such as autonomous driving and intelligent surveillance systems. In current practice, third-party resources such as datasets, backbone networks, and…

Computer Vision and Pattern Recognition · Computer Science 2022-05-05 Yiming Li , Haoxiang Zhong , Xingjun Ma , Yong Jiang , Shu-Tao Xia

Prompt-based approaches offer a cutting-edge solution to data privacy issues in continual learning, particularly in scenarios involving multiple data suppliers where long-term storage of private user data is prohibited. Despite delivering…

Machine Learning · Computer Science 2024-12-18 Trang Nguyen , Anh Tran , Nhat Ho

Object detection has been widely used in many safety-critical tasks, such as autonomous driving. However, its vulnerability to adversarial examples has not been sufficiently studied, especially under the practical scenario of black-box…

Computer Vision and Pattern Recognition · Computer Science 2022-01-25 Siyuan Liang , Baoyuan Wu , Yanbo Fan , Xingxing Wei , Xiaochun Cao

In this paper, we present a systematic survey on the contextual information based proximity detection techniques. These techniques are heavily used for improving security and usability in Zero-Interaction based Co-presence Detection and…

Cryptography and Security · Computer Science 2019-04-15 Mauro Conti , Chhagan Lal

Based on analyzing the character of cascaded decoder architecture commonly adopted in existing DETR-like models, this paper proposes a new decoder architecture. The cascaded decoder architecture constrains object queries to update in the…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Zhixiong Nan , Xianghong Li , Jifeng Dai , Tao Xiang

Face Recognition Systems (FRS) have increasingly integrated into critical applications, including surveillance and user authentication, highlighting their pivotal role in modern security systems. Recent studies have revealed vulnerabilities…

Cryptography and Security · Computer Science 2024-06-11 Jiahao Chen , Zhiqiang Shen , Yuwen Pu , Chunyi Zhou , Changjiang Li , Jiliang Li , Ting Wang , Shouling Ji

With the success of deep learning algorithms in various domains, studying adversarial attacks to secure deep models in real world applications has become an important research topic. Backdoor attacks are a form of adversarial attacks on…

Computer Vision and Pattern Recognition · Computer Science 2019-12-24 Aniruddha Saha , Akshayvarun Subramanya , Hamed Pirsiavash

Backdoors can be injected into NLP models to induce misbehavior when the input text contains a specific feature, known as a trigger, which the attacker secretly selects. Unlike fixed words, phrases, or sentences used in the static text…

Cryptography and Security · Computer Science 2024-09-12 Rui Zeng , Xi Chen , Yuwen Pu , Xuhong Zhang , Tianyu Du , Shouling Ji

The security issue of mobile robots has attracted considerable attention in recent years. In this paper, we propose an intelligent physical attack to trap mobile robots into a preset position by learning the obstacle-avoidance mechanism…

Robotics · Computer Science 2022-08-23 Yushan Li , Jianping He , Cailian Chen , Xinping Guan

Backdoor attacks pose a critical threat to the security of deep neural networks, yet existing efforts on universal backdoors often rely on visually salient patterns, making them easier to detect and less practical at scale. In this work, we…

Cryptography and Security · Computer Science 2026-03-03 Hsin Lin , Yan-Lun Chen , Ren-Hung Hwang , Chia-Mu Yu

Most post-training backdoor detection methods rely on attacked models exhibiting extreme outlier detection statistics for the target class of an attack, compared to non-target classes. However, these approaches may fail: (1) when some…

Machine Learning · Computer Science 2025-12-10 Guangmingmei Yang , David J. Miller , George Kesidis

Backdoors on federated learning will be diluted by subsequent benign updates. This is reflected in the significant reduction of attack success rate as iterations increase, ultimately failing. We use a new metric to quantify the degree of…

Cryptography and Security · Computer Science 2024-04-30 Tao Liu , Yuhang Zhang , Zhu Feng , Zhiqin Yang , Chen Xu , Dapeng Man , Wu Yang

Recent research on backdoor stealthiness focuses mainly on indistinguishable triggers in input space and inseparable backdoor representations in feature space, aiming to circumvent backdoor defenses that examine these respective spaces.…

Cryptography and Security · Computer Science 2025-12-15 Xiaoyun Xu , Zhuoran Liu , Stefanos Koffas , Stjepan Picek

Due to the high cost of training, large model (LM) practitioners commonly use pretrained models downloaded from untrusted sources, which could lead to owning compromised models. In-context learning is the ability of LMs to perform multiple…

Cryptography and Security · Computer Science 2024-09-09 Gorka Abad , Stjepan Picek , Lorenzo Cavallaro , Aitor Urbieta

The rapid deployment of large language model (LLM)-based agents in real-world applications has raised serious concerns about their trustworthiness. In this work, we reveal the security and robustness vulnerabilities of these agents through…

Artificial Intelligence · Computer Science 2025-10-10 Jiyang Qiu , Xinbei Ma , Yunqing Xu , Zhuosheng Zhang , Hai Zhao

Industrial control systems (ICS), which in many cases are components of critical national infrastructure, are increasingly being connected to other networks and the wider internet motivated by factors such as enhanced operational…

Cryptography and Security · Computer Science 2017-09-20 Cheng Feng , Tingting Li , Zhanxing Zhu , Deeph Chana

Federated Learning (FL) has emerged as a leading paradigm for privacy-preserving distributed machine learning, yet the distributed nature of FL introduces unique security challenges, notably the threat of backdoor attacks. Existing backdoor…

Cryptography and Security · Computer Science 2025-06-27 Chengcheng Zhu , Ye Li , Bosen Rao , Jiale Zhang , Yunlong Mao , Sheng Zhong

Despite remarkable successes in unimodal learning tasks, backdoor attacks against cross-modal learning are still underexplored due to the limited generalization and inferior stealthiness when involving multiple modalities. Notably, since…

Computer Vision and Pattern Recognition · Computer Science 2024-10-04 Zheng Zhang , Xu Yuan , Lei Zhu , Jingkuan Song , Liqiang Nie

Federated self-supervised learning (FSSL) combines the advantages of decentralized modeling and unlabeled representation learning, serving as a cutting-edge paradigm with strong potential for scalability and privacy preservation. Although…

Cryptography and Security · Computer Science 2025-08-12 Jiayao Wang , Yang Song , Zhendong Zhao , Jiale Zhang , Qilin Wu , Junwu Zhu , Dongfang Zhao