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Jailbreak attacks on Large Language Models (LLMs) have demonstrated various successful methods whereby attackers manipulate models into generating harmful responses that they are designed to avoid. Among these, Greedy Coordinate Gradient…

计算与语言 · 计算机科学 2026-05-28 Junjie Mu , Zonghao Ying , Zhekui Fan , Zonglei Jing , Yaoyuan Zhang , Zhengmin Yu , Wenxin Zhang , Quanchen Zou , Xiangzheng Zhang

Gradient-based adversarial prompting, such as the Greedy Coordinate Gradient (GCG) algorithm, has emerged as a powerful method for jailbreaking large language models (LLMs). In this paper, we present a systematic appraisal of GCG and its…

计算与语言 · 计算机科学 2025-09-03 Yuting Tan , Xuying Li , Zhuo Li , Huizhen Shu , Peikang Hu

Language Language Models (LLMs) face safety concerns due to potential misuse by malicious users. Recent red-teaming efforts have identified adversarial suffixes capable of jailbreaking LLMs using the gradient-based search algorithm Greedy…

计算与语言 · 计算机科学 2024-10-08 Hongfu Liu , Yuxi Xie , Ye Wang , Michael Shieh

Although large language models (LLMs) are typically aligned, they remain vulnerable to jailbreaking through either carefully crafted prompts in natural language or, interestingly, gibberish adversarial suffixes. However, gibberish tokens…

计算与语言 · 计算机科学 2024-10-30 Vishal Kumar , Zeyi Liao , Jaylen Jones , Huan Sun

The deployment of large language models (LLMs) has raised security concerns due to their susceptibility to producing harmful or policy-violating outputs when exposed to adversarial prompts. While alignment and guardrails mitigate common…

计算与语言 · 计算机科学 2026-01-23 Rishit Chugh

While most LLMs are autoregressive, diffusion-based LLMs have recently emerged as an alternative method for generation. Greedy Coordinate Gradient (GCG) attacks have proven effective against autoregressive models, but their applicability to…

机器学习 · 计算机科学 2026-01-22 Ruben Neyroud , Sam Corley

Despite significant ongoing efforts in safety alignment, large language models (LLMs) such as GPT-4 and LLaMA 3 remain vulnerable to jailbreak attacks that can induce harmful behaviors, including through the use of adversarial suffixes.…

密码学与安全 · 计算机科学 2024-12-20 Wei Zhao , Zhe Li , Yige Li , Jun Sun

As large language models (LLMs) are increasingly deployed in critical applications, ensuring their robustness and safety alignment remains a major challenge. Despite the overall success of alignment techniques such as reinforcement learning…

机器学习 · 计算机科学 2025-08-21 Sajib Biswas , Mao Nishino , Samuel Jacob Chacko , Xiuwen Liu

As large language models (LLMs) become increasingly prevalent and integrated into autonomous systems, ensuring their safety is imperative. Despite significant strides toward safety alignment, recent work GCG~\citep{zou2023universal}…

计算与语言 · 计算机科学 2024-11-26 Zeyi Liao , Huan Sun

Large Language Models (LLMs) have achieved remarkable success across diverse tasks, yet they remain vulnerable to adversarial attacks, notably the well-known jailbreak attack. In particular, the Greedy Coordinate Gradient (GCG) attack has…

机器学习 · 计算机科学 2025-03-04 Yihao Zhang , Zeming Wei

Despite the advancements in training Large Language Models (LLMs) with alignment techniques to enhance the safety of generated content, these models remain susceptible to jailbreak, an adversarial attack method that exposes security…

计算与语言 · 计算机科学 2024-12-17 Jiahui Li , Yongchang Hao , Haoyu Xu , Xing Wang , Yu Hong

Aligned Large Language Models (LLMs) have attracted significant attention for their safety, particularly in the context of jailbreak attacks that attempt to bypass guardrails via adversarial prompts. Among existing approaches, the Greedy…

机器学习 · 计算机科学 2026-05-20 Xiao Li , Wei Zhang , Zhuhong Li , Qiongxiu Li , Shei PernChua , BingZe Lee , Jinghao Cui , Yifan Huang , Xiaolin Hu

We study suffix-based jailbreaks$\unicode{x2013}$a powerful family of attacks against large language models (LLMs) that optimize adversarial suffixes to circumvent safety alignment. Focusing on the widely used foundational GCG attack, we…

密码学与安全 · 计算机科学 2025-12-23 Matan Ben-Tov , Mor Geva , Mahmood Sharif

Large language models (LLMs) have demonstrated impressive performance across various domains but remain susceptible to safety concerns. Prior research indicates that gradient-based adversarial attacks are particularly effective against…

计算与语言 · 计算机科学 2024-10-30 Jingbo Su

Large language models have drawn significant attention to the challenge of safe alignment, especially regarding jailbreak attacks that circumvent security measures to produce harmful content. To address the limitations of existing methods…

人工智能 · 计算机科学 2024-11-05 Hanqing Liu , Lifeng Zhou , Huanqian Yan

A novel hack involving Large Language Models (LLMs) has emerged, exploiting adversarial suffixes to deceive models into generating perilous responses. Such jailbreaks can trick LLMs into providing intricate instructions to a malicious user…

计算与语言 · 计算机科学 2023-11-08 Gabriel Alon , Michael Kamfonas

In recent years, the rapid development of large language models (LLMs) has achieved remarkable performance across various tasks. However, research indicates that LLMs are vulnerable to jailbreak attacks, where adversaries can induce the…

密码学与安全 · 计算机科学 2024-08-23 Jiawei Zhao , Kejiang Chen , Xiaojian Yuan , Weiming Zhang

Adversarial prompts generated using gradient-based methods exhibit outstanding performance in performing automatic jailbreak attacks against safety-aligned LLMs. Nevertheless, due to the discrete nature of texts, the input gradient of LLMs…

密码学与安全 · 计算机科学 2024-11-04 Qizhang Li , Yiwen Guo , Wangmeng Zuo , Hao Chen

As powerful Large Language Models (LLMs) are now widely used for numerous practical applications, their safety is of critical importance. While alignment techniques have significantly improved overall safety, LLMs remain vulnerable to…

机器学习 · 计算机科学 2024-10-28 Samuel Jacob Chacko , Sajib Biswas , Chashi Mahiul Islam , Fatema Tabassum Liza , Xiuwen Liu

This paper studies the vulnerabilities of transformer-based Large Language Models (LLMs) to jailbreaking attacks, focusing specifically on the optimization-based Greedy Coordinate Gradient (GCG) strategy. We first observe a positive…

计算与语言 · 计算机科学 2024-10-14 Zijun Wang , Haoqin Tu , Jieru Mei , Bingchen Zhao , Yisen Wang , Cihang Xie
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