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~ similar to 2604.03595v1· 20 results

cs.CRcs.AIcs.LGRecentMay 22, 2026

Adversarial Vulnerability Under Temporal Concept Drift: A Longitudinal Study of Android Malware Detection

Ahmed Sabbah, Mohammed Kharma, Radi Jarrar, Samer Zein +1 more

This study longitudinally evaluates the adversarial robustness of Android malware detection systems over a decade, finding that temporal separation significantly degrades robustness due to concept dri…

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cs.CRcs.CLRecentMay 13, 2026

Model-Agnostic Lifelong LLM Safety via Externalized Attack-Defense Co-Evolution

Xiaozhe Zhang, Chaozhuo Li, Hui Liu, Shaocheng Yan +3 more

The EvoSafety framework enhances LLM safety by externalizing attack and defense mechanisms, enabling persistent, transferable, and model-agnostic robustness against adversarial prompts.

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cs.CRcs.AIRecentApr 5, 2026

CoopGuard: Stateful Cooperative Agents Safeguarding LLMs Against Evolving Multi-Round Attacks

Siyuan Li, Zehao Liu, Xi Lin, Qinghua Mao +5 more

CoopGuard is a novel stateful, multi-round defense framework using cooperative agents to significantly reduce the success rate of evolving adversarial attacks against Large Language Models.

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cs.CRcs.AIcs.LGRecentMay 8, 2026

Defense effectiveness across architectural layers: a mechanistic evaluation of persistent memory attacks on stateful LLM agents

Jun Wen Leong

The paper systematically evaluates various defense mechanisms against persistent memory attacks on LLM agents, finding that only tool-gating at the memory layer (Memory Sandbox) effectively mitigates…

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cs.CRcs.LGRecentMar 31, 2026

Backdoor Attacks on Decentralised Post-Training

Oğuzhan Ersoy, Nikolay Blagoev, Jona te Lintelo, Stefanos Koffas +2 more

This paper introduces the first backdoor attack specifically targeting pipeline parallelism in decentralized post-training, demonstrating that a limited adversary controlling an intermediate stage can…

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cs.CRRecentApr 1, 2026

When Safe Models Merge into Danger: Exploiting Latent Vulnerabilities in LLM Fusion

Jiaqing Li, Zhibo Zhang, Shide Zhou, Yuxi Li +2 more

The paper introduces TrojanMerge, a framework demonstrating that model merging can be exploited to systematically compromise the safety alignment of multiple individually safe LLMs.

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cs.CRcs.AIcs.LGRecentMay 14, 2026

One Step to the Side: Why Defenses Against Malicious Finetuning Fail Under Adaptive Adversaries

Itay Zloczower, Eyal Lenga, Gilad Gressel, Yisroel Mirsky

The paper demonstrates that current defenses against malicious fine-tuning of foundation models are insufficient because they only address fixed attacks, and introduces a unified adaptive attack that…

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cs.CRcs.CLcs.DCRecentApr 27, 2026

A Survey on Split Learning for LLM Fine-Tuning: Models, Systems, and Privacy Optimizations

Zihan Liu, Yizhen Wang, Rui Wang, Xiu Tang +1 more

This survey provides a comprehensive, structured taxonomy of split learning techniques for fine-tuning Large Language Models (LLMs), covering model optimization, system efficiency, and privacy preserv…

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cs.LGcs.CVRecentJun 1, 2026

Closing the Alignment-Maturity Gap in Federated Prototype Learning

Mario Casado-Diez, Alejandro Dopico-Castro, Verónica Bolón-Canedo, Bertha Guijarro-Berdiñas

The paper proposes FedSAP, a framework that stabilizes federated prototype learning by delaying global alignment and enforcing inter-class structure, significantly improving representation quality und…

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cs.CRRecentMar 17, 2026

Poisoning the Pixels: Revisiting Backdoor Attacks on Semantic Segmentation

Guangsheng Zhang, Huan Tian, Leo Zhang, Tianqing Zhu +3 more

This paper systematically revisits and expands the threat model for backdoor attacks on semantic segmentation, proposing a unified framework (BADSEG) that demonstrates severe, previously overlooked vu…

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cs.LGcs.CRRecentMar 31, 2026

Dummy-Aware Weighted Attack (DAWA): Breaking the Safe Sink in Dummy Class Defenses

Yunrui Yu, Xuxiang Feng, Pengda Qin, Pengyang Wang +4 more

The paper introduces Dummy-Aware Weighted Attack (DAWA), a novel evaluation method that significantly reduces the reported robustness of Dummy Classes-based defenses by simultaneously targeting both t…

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cs.CRRecentApr 8, 2026

Can Drift-Adaptive Malware Detectors Be Made Robust? Attacks and Defenses Under White-Box and Black-Box Threats

Adrian Shuai Li, Md Ajwad Akil, Elisa Bertino

The paper proposes a universal robustification framework to enhance drift-adaptive malware detectors against combined concept drift and adversarial attacks, significantly reducing attack success rates…

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cs.CRcs.LGRecentMay 19, 2026

Awakening the Hydra: Stabilizing Multi-Concept Backdoor Injection in Text-to-Image Diffusion Models

Kai Wang, Jiale Zhang, Chengcheng Zhu, Chuang Ma +1 more

The paper proposes Hydra, a framework to stabilize and control the injection of multiple, conflicting backdoor triggers into text-to-image diffusion models, ensuring high attack reliability while main…

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cs.LGcs.CRRecentMar 19, 2026

Revisiting Label Inference Attacks in Vertical Federated Learning: Why They Are Vulnerable and How to Defend

Yige Liu, Dexuan Xu, Zimai Guo, Yongzhi Cao +1 more

This paper analyzes label inference attacks in Vertical Federated Learning (VFL), demonstrating that existing attacks rely on feature-label distribution alignment, and proposes a zero-overhead defense…

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cs.CRcs.LGRecentJun 2, 2026

RogueMerge: Robust and Unified Attacks against LLM Model Merging

Jinghuai Zhang, Yetian He, Kunlin Cai, Han Zhao +2 more

RogueMerge introduces a unified framework to robustly attack LLM model merging by addressing the challenges of autoregressive decoding, unknown merging configurations, and prompt generalization, signi…

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cs.CRcs.CVRecentApr 17, 2026

TwoHamsters: Benchmarking Multi-Concept Compositional Unsafety in Text-to-Image Models

Chaoshuo Zhang, Yibo Liang, Mengke Tian, Chenhao Lin +5 more

This paper introduces TwoHamsters, a new benchmark that rigorously tests Multi-Concept Compositional Unsafety (MCCU) in text-to-image models, demonstrating that current state-of-the-art models and saf…

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cs.CRcs.AIRecentApr 30, 2026

Secret Stealing Attacks on Local LLM Fine-Tuning through Supply-Chain Model Code Backdoors

Zi Li, Tian Zhou, Wenze Li, Jingyu Hua +2 more

This paper introduces a novel supply-chain attack that uses model code backdoors to actively steal sensitive secrets from local LLM fine-tuning datasets, bypassing current privacy defenses.

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cs.CRcs.CVRecentMay 19, 2026

Exposing Functional Fusion: A New Class of Strategic Backdoor in Dynamic Prompt Architectures

Zeyao Liu, Zhendong Zhao, Xiaojun Chen, Xin Zhao +2 more

The paper introduces VIPER, a novel backdoor attack framework that exploits the functional fusion of malicious and benign logic within dynamic prompt architectures, demonstrating a new, high-risk thre…

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cs.LGcs.AIcs.CERecentMay 3, 2026

RefusalGuard: Geometry-Preserving Fine-Tuning for Safety in LLMs

Sadia Asif, Mohammad Mohammadi Amiri

The paper introduces RefusalGuard, a novel fine-tuning framework that preserves the geometric structure of safety-relevant representations in LLMs, thereby mitigating the degradation of refusal behavi…

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cs.CRcs.AIcs.DCRecentApr 10, 2026

XFED: Non-Collusive Model Poisoning Attack Against Byzantine-Robust Federated Classifiers

Israt Jahan Mouri, Muhammad Ridowan, Muhammad Abdullah Adnan

The paper introduces XFED, a novel non-collusive model poisoning attack that demonstrates the feasibility of compromising Federated Learning systems without requiring coordination among attackers, byp…

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