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20 results for “Understanding of model quantization, large language models, and backdoor attacks”

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cs.CRcs.LGEmpiricalRecentJun 27, 2026

FlipGuard: Defending Large Language Models Against Quantization-Conditioned Backdoor Attacks

Aoying Zheng, Anqi Du, Zizhuang Deng, Yuxuan Chen

The paper introduces FlipGuard, a proactive defense framework against Quantization-Conditioned Backdoor (QCB) attacks in Large Language Models (LLMs), achieving high security with negligible performan…

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cs.LGcs.CRstat.MLTheoreticalRecentJul 10, 2026

Statistically Undetectable Backdoors in Deep Neural Networks

Andrej Bogdanov, Alon Rosen, Neekon Vafa

An adversarial model trainer can plant statistically undetectable backdoors in deep neural networks, providing access to adversarial examples.

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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.CRRecentMay 7, 2026

Benchmarking Large Language Models for IoC Recovery under Adversarial Code Obfuscation and Encryption

Jaime Morales, Sergio Pastrana, Juan Tapiador

The paper introduces a systematic benchmark to test LLMs' ability to recover Indicators of Compromise (IoCs) from JavaScript code, finding that while LLMs handle simple obfuscation well, encryption-ba…

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cs.CRcs.AIRecentMay 4, 2026

On the Privacy of LLMs: An Ablation Study

Karima Makhlouf, Lamiaa Basyoni, Syed Khaderi, Gabriel Marquez +3 more

This paper conducts a structured ablation study using a unified threat model to evaluate how various system factors (like model architecture and retrieval configuration) influence different types of p…

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cs.CRRecentMay 10, 2026

BadDLM: Backdooring Diffusion Language Models with Diverse Targets

Shengfang Zhai, Xiaoyang Ji, Yuling Shi, Haoran Gao +5 more

The paper introduces BadDLM, a unified framework that demonstrates a new class of backdoor vulnerabilities in Diffusion Language Models (DLMs) by exploiting their forward masking process across divers…

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cs.CRcs.LGRecentApr 29, 2026

Quantamination: Dynamic Quantization Leaks Your Data Across the Batch

Hanna Foerster, Ilia Shumailov, Cheng Zhang, Yiren Zhao +2 more

This paper identifies a critical privacy vulnerability, termed Quantamination, where dynamic quantization in popular ML frameworks can leak sensitive user data across batch boundaries.

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cs.CRcs.LGRecentMay 28, 2026

Fingerprinting Inference Systems of Large Language Models

Anna Wimbauer, Jonas Möller, Erik Imgrund, Konrad Rieck

This paper introduces a fingerprinting method that exploits subtle numerical deviations in the inference system components (like the engine or hardware) to reliably identify the specific components us…

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cs.CRcs.AIcs.IRRecentJun 2, 2026

Patcher: Post-Hoc Patching of Backdoored Large Language Models

Anjun Gao, Yueyang Quan, Yufei Xia, Zhuqing Liu +1 more

Patcher is a post-hoc defense framework that repairs backdoored large language models by localizing hidden triggers and patching the model using only a single reported failure case.

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cs.CRcs.AIEmpiricalRecentJul 22, 2026

Defense Against LLM Backdoors using Critical Neuron Isolation Pruning

Yuxi Li, Zhibo Zhang, Kailong Wang, Xingshuo Han +2 more

The paper introduces DeCNIP, a method for identifying and neutralizing backdoors in large language models using representational analysis and neuron isolation pruning.

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cs.CRcs.CLRecentMay 14, 2026

MetaBackdoor: Exploiting Positional Encoding as a Backdoor Attack Surface in LLMs

Rui Wen, Mark Russinovich, Andrew Paverd, Jun Sakuma +1 more

The paper introduces MetaBackdoor, a novel class of LLM backdoor attacks that exploits positional encoding (length-based triggers) rather than requiring modifications to the textual content.

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cs.CRRecentMay 8, 2026

Cross-Modal Backdoors in Multimodal Large Language Models

Runhe Wang, Li Bai, Haibo Hu, Songze Li

The paper proposes a novel cross-modal backdoor attack that exploits the vulnerability of lightweight connectors in multimodal LLMs, demonstrating high attack success rates across different modalities…

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cs.CRcs.CLcs.LGRecentMar 25, 2026

How Vulnerable Are Edge LLMs?

Ao Ding, Hongzong Li, Zi Liang, Zhanpeng Shi +4 more

The paper investigates the security risk of extracting knowledge from quantized LLMs deployed on edge devices, showing that structured querying can effectively bypass quantization protections.

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cs.CRRecentMay 7, 2026

Language Models Can Autonomously Hack and Self-Replicate

Alena Air, Reworr, Nikolaj Kotov, Dmitrii Volkov +2 more

The paper demonstrates that large language models can autonomously hack and self-replicate across a network by exploiting common web-application vulnerabilities.

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cs.CRcs.AIRecentApr 1, 2026

Automated Framework to Evaluate and Harden LLM System Instructions against Encoding Attacks

Anubhab Sahu, Diptisha Samanta, Reza Soosahabi

The paper introduces an automated framework demonstrating that LLM system instructions are vulnerable to encoding attacks, where structured output requests can bypass safety refusals and leak sensitiv…

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cs.CRcs.AIRecentMar 17, 2026

Security Assessment and Mitigation Strategies for Large Language Models: A Comprehensive Defensive Framework

Taiwo Onitiju, Iman Vakilinia

The paper establishes a standardized security assessment framework and develops a multi-layered defensive system, demonstrating that systematic testing and external defenses are crucial for safe LLM d…

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cs.CRcs.AIRecentMar 30, 2026

Adversarial Attacks on Multimodal Large Language Models: A Comprehensive Survey

Bhavuk Jain, Sercan Ö. Arık, Hardeo K. Thakur

This survey provides a comprehensive taxonomy and vulnerability-centric analysis of adversarial attacks targeting Multimodal Large Language Models (MLLMs), offering an explanatory framework for enhanc…

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cs.CRRecentMay 20, 2026

A Large Language Model Approach to Generating Bypass Rules for Malware Evasion in Analysis Sandbox

Zhiyong Sui, Lamine Noureddine, Mst Eshita Khatun, Sideeq Bello +2 more

The paper introduces ABLE, an LLM-based system that automatically generates YARA rules to bypass malware evasion checks in analysis sandboxes, achieving a 79% bypass success rate.

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cs.CRcs.AIcs.CLRecentMay 5, 2026

Exposing LLM Safety Gaps Through Mathematical Encoding:New Attacks and Systematic Analysis

Haoyu Zhang, Mohammad Zandsalimy, Shanu Sushmita

The paper demonstrates that encoding harmful prompts as genuine mathematical problems, rather than just using mathematical formatting, effectively bypasses the safety filters of large language models.

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