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Log Anomaly Detection (LAD) seeks to identify atypical patterns in log data that are crucial to assessing the security and condition of systems. Although Large Language Models (LLMs) have shown tremendous success in various fields, the use…

Machine Learning · Computer Science 2025-03-12 Ying Fu Lim , Jiawen Zhu , Guansong Pang

With the rapid advancements in Multimodal Large Language Models (MLLMs), securing these models against malicious inputs while aligning them with human values has emerged as a critical challenge. In this paper, we investigate an important…

Cryptography and Security · Computer Science 2024-11-26 Weidi Luo , Siyuan Ma , Xiaogeng Liu , Xiaoyu Guo , Chaowei Xiao

Retrieval-Augmented Generation (RAG) systems have emerged as a promising solution to mitigate LLM hallucinations and enhance their performance in knowledge-intensive domains. However, these systems are vulnerable to adversarial poisoning…

Information Retrieval · Computer Science 2025-07-29 Jinyan Su , Jin Peng Zhou , Zhengxin Zhang , Preslav Nakov , Claire Cardie

Data containing personal information is increasingly used to train, fine-tune, or query Large Language Models (LLMs). Text is typically scrubbed of identifying information prior to use, often with tools such as Microsoft's Presidio or…

Computation and Language · Computer Science 2026-02-16 Nataša Krčo , Zexi Yao , Matthieu Meeus , Yves-Alexandre de Montjoye

Large language models (LLMs) have demonstrated remarkable capabilities across various tasks. However, their ability to generate human-like text has raised concerns about potential misuse. This underscores the need for reliable and effective…

Computation and Language · Computer Science 2026-04-24 Runheng Liu , Heyan Huang , Xingchen Xiao , Zhijing Wu

Large Language Models (LLMs) have raised increasing concerns about their misuse in generating hate speech. Among all the efforts to address this issue, hate speech detectors play a crucial role. However, the effectiveness of different…

Cryptography and Security · Computer Science 2025-01-29 Xinyue Shen , Yixin Wu , Yiting Qu , Michael Backes , Savvas Zannettou , Yang Zhang

This research article critically examines the potential risks and implications arising from the malicious utilization of large language models(LLM), focusing specifically on ChatGPT and Google's Bard. Although these large language models…

Cryptography and Security · Computer Science 2023-05-25 P. V. Sai Charan , Hrushikesh Chunduri , P. Mohan Anand , Sandeep K Shukla

A plethora of jailbreaking attacks have been proposed to obtain harmful responses from safety-tuned LLMs. These methods largely succeed in coercing the target output in their original settings, but their attacks vary substantially in…

Machine Learning · Computer Science 2025-06-12 Valentyn Boreiko , Alexander Panfilov , Vaclav Voracek , Matthias Hein , Jonas Geiping

Large Language Models (LLMs) have emerged as a powerful approach for driving offensive penetration-testing tooling. Due to the opaque nature of LLMs, empirical methods are typically used to analyze their efficacy. The quality of this…

Cryptography and Security · Computer Science 2025-06-17 Andreas Happe , Jürgen Cito

Large Language Models (LLMs) are increasingly applied to tasks involving structured inputs such as graphs. Abstract Meaning Representations (AMRs), which encode rich semantics as directed graphs, offer a rigorous testbed for evaluating LLMs…

Computation and Language · Computer Science 2025-12-11 Rafiq Kamel , Filippo Guerranti , Simon Geisler , Stephan Günnemann

Large language models (LLMs) have recently achieved significant success across various application domains, garnering substantial attention from different communities. Unfortunately, even for the best LLM, many \textit{faults} still exist…

Software Engineering · Computer Science 2024-11-06 Qiang Hu , Jin Wen , Maxime Cordy , Yuheng Huang , Wei Ma , Xiaofei Xie , Lei Ma

Advanced Persistent Threats (APTs) have caused significant losses across a wide range of sectors, including the theft of sensitive data and harm to system integrity. As attack techniques grow increasingly sophisticated and stealthy, the…

Cryptography and Security · Computer Science 2025-03-27 Fei Zuo , Junghwan Rhee , Yung Ryn Choe

Natural Language Processing (NLP) models based on Machine Learning (ML) are susceptible to adversarial attacks -- malicious algorithms that imperceptibly modify input text to force models into making incorrect predictions. However,…

Computation and Language · Computer Science 2023-05-26 Salijona Dyrmishi , Salah Ghamizi , Maxime Cordy

In this paper, we explore the feasibility of leveraging large language models (LLMs) to automate or otherwise assist human raters with identifying harmful content including hate speech, harassment, violent extremism, and election…

With the significant development of large models in recent years, Large Vision-Language Models (LVLMs) have demonstrated remarkable capabilities across a wide range of multimodal understanding and reasoning tasks. Compared to traditional…

Computer Vision and Pattern Recognition · Computer Science 2024-07-15 Daizong Liu , Mingyu Yang , Xiaoye Qu , Pan Zhou , Yu Cheng , Wei Hu

The widespread adoption of Large Language Models (LLMs) in critical applications has introduced severe reliability and security risks, as LLMs remain vulnerable to notorious threats such as hallucinations, jailbreak attacks, and backdoor…

Cryptography and Security · Computer Science 2026-04-07 Shide Zhou , Kailong Wang , Ling Shi , Haoyu Wang

Large language models (LLMs) have transformed human writing by enhancing grammar correction, content expansion, and stylistic refinement. However, their widespread use raises concerns about authorship, originality, and ethics, even…

Computation and Language · Computer Science 2024-10-21 Zhen Tao , Zhiyu Li , Runyu Chen , Dinghao Xi , Wei Xu

Large Language Models (LLMs) have recently emerged as powerful tools in cybersecurity, offering advanced capabilities in malware detection, generation, and real-time monitoring. Numerous studies have explored their application in…

Cryptography and Security · Computer Science 2025-04-11 Hamed Jelodar , Samita Bai , Parisa Hamedi , Hesamodin Mohammadian , Roozbeh Razavi-Far , Ali Ghorbani

Large Language Models (LLMs) remain vulnerable to jailbreak attacks, which attempt to elicit harmful responses from LLMs. The evolving nature and diversity of these attacks pose many challenges for defense systems, including (1) adaptation…

Cryptography and Security · Computer Science 2025-11-04 Guangyu Yang , Jinghong Chen , Jingbiao Mei , Weizhe Lin , Bill Byrne

E-commerce platforms and payment solution providers face increasingly sophisticated fraud schemes, ranging from identity theft and account takeovers to complex money laundering operations that exploit the speed and anonymity of digital…

Artificial Intelligence · Computer Science 2026-01-12 Cooper Lin , Yanting Zhang , Maohao Ran , Wei Xue , Hongwei Fan , Yibo Xu , Zhenglin Wan , Sirui Han , Yike Guo , Jun Song