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Large language model (LLM) services have recently begun offering a plugin ecosystem to interact with third-party API services. This innovation enhances the capabilities of LLMs, but it also introduces risks, as these plugins developed by…

Cryptography and Security · Computer Science 2024-04-29 Wanru Zhao , Vidit Khazanchi , Haodi Xing , Xuanli He , Qiongkai Xu , Nicholas Donald Lane

Understanding and addressing potential safety alignment risks in large language models (LLMs) is critical for ensuring their safe and trustworthy deployment. In this paper, we highlight an insidious safety threat: a compromised LLM can…

Machine Learning · Computer Science 2026-03-24 Guangnian Wan , Xinyin Ma , Gongfan Fang , Xinchao Wang

Large language models (LLMs) are now highly capable at a diverse range of tasks. This paper studies whether or not GPT-4, one such LLM, is capable of assisting researchers in the field of adversarial machine learning. As a case study, we…

Cryptography and Security · Computer Science 2023-07-28 Nicholas Carlini

As Large Language Models (LLMs) are increasingly deployed as autonomous agents in complex and long horizon settings, it is critical to evaluate their ability to sabotage users by pursuing hidden objectives. We study the ability of frontier…

Can we trust Large Language Models (LLMs) to accurately predict scam? This paper investigates the vulnerabilities of LLMs when facing adversarial scam messages for the task of scam detection. We addressed this issue by creating a…

Cryptography and Security · Computer Science 2025-11-05 Chen-Wei Chang , Shailik Sarkar , Shutonu Mitra , Qi Zhang , Hossein Salemi , Hemant Purohit , Fengxiu Zhang , Michin Hong , Jin-Hee Cho , Chang-Tien Lu

LLM-powered applications routinely embed secrets in system prompts, yet models can be tricked into revealing them. We built an adaptive attacker that evolves its strategies over hundreds of rounds and tested it against nine defense…

Cryptography and Security · Computer Science 2026-05-14 Priyal Deep , Shane Emmons , Amy Fox , Kyle Bacon , Kelley McAllister , Peter Ortiz , Krisztian Flautner

As fine-tuning large language models (LLMs) becomes increasingly prevalent, users often rely on third-party services with limited visibility into their fine-tuning processes. This lack of transparency raises the question: how do consumers…

Machine Learning · Computer Science 2024-11-13 Eva Zhang , Arka Pal , Akilesh Potti , Micah Goldblum

As Large Language Models (LLMs) have become integral to both research and daily operations, rigorous evaluation is crucial. This assessment is important not only for individual tasks but also for understanding their societal impact and…

Software Engineering · Computer Science 2024-04-02 Zeeshan Rasheed , Muhammad Waseem , Kari Systä , Pekka Abrahamsson

As large language models (LLMs) continue to evolve, their potential use in automating cyberattacks becomes increasingly likely. With capabilities such as reconnaissance, exploitation, and command execution, LLMs could soon become integral…

Cryptography and Security · Computer Science 2024-10-22 Daniel Ayzenshteyn , Roy Weiss , Yisroel Mirsky

The widespread adoption of code language models in software engineering tasks has exposed vulnerabilities to adversarial attacks, especially the identifier substitution attacks. Although existing identifier substitution attackers…

Software Engineering · Computer Science 2025-04-29 Wenhan Mu , Ling Xu , Shuren Pei , Le Mi , Huichi Zhou

Large language models (LLMs) have shown great potential as general-purpose AI assistants in various domains. To meet the requirements of different applications, LLMs are often customized by further fine-tuning. However, the powerful…

Machine Learning · Computer Science 2023-11-07 Xin Zhou , Yi Lu , Ruotian Ma , Tao Gui , Qi Zhang , Xuanjing Huang

AI control protocols serve as a defense mechanism to stop untrusted LLM agents from causing harm in autonomous settings. Prior work treats this as a security problem, stress testing with exploits that use the deployment context to subtly…

With the fast development of large language models (LLMs), LLM-driven Web Agents (Web Agents for short) have obtained tons of attention due to their superior capability where LLMs serve as the core part of making decisions like the human…

Cryptography and Security · Computer Science 2024-02-28 Fangzhou Wu , Shutong Wu , Yulong Cao , Chaowei Xiao

Fine-tuning a general-purpose large language model (LLM) for a specific domain or task has become a routine procedure for ordinary users. However, fine-tuning is known to remove the safety alignment features of the model, even when the…

Computation and Language · Computer Science 2025-06-23 Kathleen C. Fraser , Hillary Dawkins , Isar Nejadgholi , Svetlana Kiritchenko

Model providers increasingly release open weights or allow users to fine-tune foundation models through APIs. Although these models are safety-aligned before release, their safeguards can often be removed by fine-tuning on harmful data.…

Cryptography and Security · Computer Science 2026-05-26 Itay Zloczower , Eyal Lenga , Gilad Gressel , Yisroel Mirsky

As API access becomes a primary interface to large language models (LLMs), users often interact with black-box systems that offer little transparency into the deployed model. To reduce costs or maliciously alter model behaviors, API…

Cryptography and Security · Computer Science 2026-04-10 Xiaoyuan Zhu , Yaowen Ye , Tianyi Qiu , Hanlin Zhu , Sijun Tan , Ajraf Mannan , Jonathan Michala , Raluca Ada Popa , Willie Neiswanger

Large Language Models (LLMs) are increasingly used to build autonomous agents that perform complex tasks with external tools, often exposed through APIs in enterprise systems. Direct use of these APIs is difficult due to the complex input…

The rise of Large Language Model (LLM) agents, augmented with tool use, skills, and external knowledge, has introduced new security risks. Among them, prompt injection attacks, where adversaries embed malicious instructions into the agent…

Cryptography and Security · Computer Science 2026-05-06 Shihao Weng , Yang Feng , Jinrui Zhang , Xiaofei Xie , Jiongchi Yu , Jia Liu

Pre-trained Large Language Models (LLMs) are an integral part of modern AI that have led to breakthrough performances in complex AI tasks. Major AI companies with expensive infrastructures are able to develop and train these large models…

Cryptography and Security · Computer Science 2023-05-02 Rouzbeh Behnia , Mohamamdreza Ebrahimi , Jason Pacheco , Balaji Padmanabhan

Large Language Models (LLMs) have recently demonstrated strong potential for cybersecurity question answering (QA), supporting decision-making in real-time threat detection and response workflows. However, their substantial computational…

Cryptography and Security · Computer Science 2025-09-18 Onat Gungor , Roshan Sood , Harold Wang , Tajana Rosing