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Organizations are increasingly adopting and adapting Large Language Models (LLMs) hosted on public repositories such as HuggingFace. Although these adaptations often improve performance on specialized downstream tasks, recent evidence…

人工智能 · 计算机科学 2025-11-04 Mina Taraghi , Yann Pequignot , Amin Nikanjam , Mohamed Amine Merzouk , Foutse Khomh

The spread of fake news, polarizing, politically biased, and harmful content on online platforms has been a serious concern. With large language models becoming a promising approach, however, no study has properly benchmarked their…

计算与语言 · 计算机科学 2025-09-10 Michele Joshua Maggini , Dhia Merzougui , Rabiraj Bandyopadhyay , Gaël Dias , Fabrice Maurel , Pablo Gamallo

As large language models (LLMs) continue to grow in capability, so do the risks of harmful misuse through fine-tuning. While most prior studies assume that attackers rely on supervised fine-tuning (SFT) for such misuse, we systematically…

机器学习 · 计算机科学 2026-05-12 Weitao Feng , Lixu Wang , Peizhuo Lv , Tianyi Wei , Jie Zhang , Chongyang Gao , Sinong Zhan , Wei Dong

Recent defenses for safeguarding open-weight large language models (LLMs) are intended to prevent adversarial usage. Underlying these defenses is an assumption that new harmful behavior is learned through fine-tuning rather than elicited by…

机器学习 · 计算机科学 2026-05-27 Kevin Kuo , Chhavi Yadav , Virginia Smith

Adjusting the latency, power, and accuracy of natural language understanding models is a desirable objective of an efficient architecture. This paper proposes an efficient Transformer architecture that adjusts the inference computational…

计算与语言 · 计算机科学 2024-09-20 Sajjad Kachuee , Mohammad Sharifkhani

Fine-tuning safety-aligned language models for downstream tasks often leads to substantial degradation of refusal behavior, making models vulnerable to adversarial misuse. While prior work has shown that safety-relevant features are encoded…

机器学习 · 计算机科学 2026-05-05 Sadia Asif , Mohammad Mohammadi Amiri

Jailbreak attacks pose a serious threat to the safety of Large Language Models (LLMs) by crafting adversarial prompts that bypass alignment mechanisms, causing the models to produce harmful, restricted, or biased content. In this paper, we…

机器学习 · 计算机科学 2025-08-22 Xiangman Li , Xiaodong Wu , Qi Li , Jianbing Ni , Rongxing Lu

Large language models (LLMs) have revolutionized the field of natural language processing with their impressive reasoning and question-answering capabilities. However, these models are sometimes prone to generating credible-sounding but…

计算与语言 · 计算机科学 2026-04-21 Ranganath Krishnan , Piyush Khanna , Omesh Tickoo

Despite substantial efforts in safety alignment, recent research indicates that Large Language Models (LLMs) remain highly susceptible to jailbreak attacks. Among these attacks, finetuning-based ones that compromise LLMs' safety alignment…

密码学与安全 · 计算机科学 2025-11-27 Zhixin Xie , Xurui Song , Jun Luo

Pre-training Large Language Models (LLMs) on web-scale datasets becomes fundamental for advancing general-purpose AI. In contrast, enhancing their predictive performance on downstream tasks typically involves adapting their knowledge…

Recent research shows that fine-tuning on benign instruction-following data can inadvertently undo the safety alignment process and increase a model's propensity to comply with harmful queries. While instruction-following fine-tuning is…

计算与语言 · 计算机科学 2025-03-03 Francisco Eiras , Aleksandar Petrov , Philip H. S. Torr , M. Pawan Kumar , Adel Bibi

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…

计算与语言 · 计算机科学 2025-06-19 Xinyi Zeng , Yuying Shang , Jiawei Chen , Jingyuan Zhang , Yu Tian

This paper addresses the privacy and security concerns associated with deep neural language models, which serve as crucial components in various modern AI-based applications. These models are often used after being pre-trained and…

密码学与安全 · 计算机科学 2024-01-01 Abhijit Mishra , Mingda Li , Soham Deo

This study investigates the mechanisms and factors influencing memorization in fine-tuned large language models (LLMs), with a focus on the medical domain due to its privacy-sensitive nature. We examine how different aspects of the…

计算与语言 · 计算机科学 2025-08-06 Danil Savine

Federated learning (FL) enables multiple parties to collaboratively fine-tune an large language model (LLM) without the need of direct data sharing. Ideally, by training on decentralized data that is aligned with human preferences and…

计算与语言 · 计算机科学 2024-06-18 Rui Ye , Jingyi Chai , Xiangrui Liu , Yaodong Yang , Yanfeng Wang , Siheng Chen

Current adversarial robustness methods for large language models require extensive datasets of harmful prompts (thousands to hundreds of thousands of examples), yet remain vulnerable to novel attack vectors and distributional shifts. We…

人工智能 · 计算机科学 2026-05-12 Linh Le , David Williams-King , Mohamed Amine Merzouk , Aton Kamanda , Adam Oberman

Parameter-efficient fine-tuning (PEFT) can bridge the gap between large language models (LLMs) and downstream tasks. However, PEFT has been proven vulnerable to malicious attacks. Research indicates that poisoned LLMs, even after PEFT,…

计算与语言 · 计算机科学 2025-05-21 Shuai Zhao , Xiaobao Wu , Cong-Duy Nguyen , Yanhao Jia , Meihuizi Jia , Yichao Feng , Luu Anh Tuan

Backdoor attacks embed malicious behaviors into Large Language Models (LLMs), enabling adversaries to trigger harmful outputs or bypass safety controls. However, the persistence of the implanted backdoors under user-driven post-deployment…

密码学与安全 · 计算机科学 2025-12-18 Jing Cui , Yufei Han , Jianbin Jiao , Junge Zhang

The increasing use of large language models (LLMs) trained by third parties raises significant security concerns. In particular, malicious actors can introduce backdoors through poisoning attacks to generate undesirable outputs. While such…

密码学与安全 · 计算机科学 2024-07-19 Shuli Jiang , Swanand Ravindra Kadhe , Yi Zhou , Farhan Ahmed , Ling Cai , Nathalie Baracaldo

Large Language Models (LLMs) have demonstrated great capabilities in natural language understanding and generation, largely attributed to the intricate alignment process using human feedback. While alignment has become an essential training…

计算与语言 · 计算机科学 2024-09-04 Bocheng Chen , Hanqing Guo , Guangjing Wang , Yuanda Wang , Qiben Yan