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The growing application of large language models (LLMs) in safety-critical domains has raised urgent concerns about their security. Many recent studies have demonstrated the feasibility of backdoor attacks against LLMs. However, existing…

Cryptography and Security · Computer Science 2026-04-24 Jiali Wei , Ming Fan , Guoheng Sun , Xicheng Zhang , Haijun Wang , Ting Liu

Text-to-image diffusion models have achieved remarkable success in generating high-quality contents from text prompts. However, their reliance on publicly available data and the growing trend of data sharing for fine-tuning make these…

Computer Vision and Pattern Recognition · Computer Science 2025-03-14 Sangwon Jang , June Suk Choi , Jaehyeong Jo , Kimin Lee , Sung Ju Hwang

Machine learning security has recently become a prominent topic in the natural language processing (NLP) area. The existing black-box adversarial attack suffers prohibitively from the high model querying complexity, resulting in easily…

Cryptography and Security · Computer Science 2023-10-17 Wenjie Lv , Zhen Wang , Yitao Zheng , Zhehua Zhong , Qi Xuan , Tianyi Chen

Large language models (LLMs) are increasingly applied in specialized domains such as finance and healthcare, where they introduce unique safety risks. Domain-specific datasets of harmful prompts remain scarce and still largely rely on…

Computation and Language · Computer Science 2026-04-21 Huawei Zheng , Xinqi Jiang , Sen Yang , Shouling Ji , Yingcai Wu , Dazhen Deng

The proliferation of face forgery techniques has raised significant concerns within society, thereby motivating the development of face forgery detection methods. These methods aim to distinguish forged faces from genuine ones and have…

Computer Vision and Pattern Recognition · Computer Science 2024-02-20 Jiawei Liang , Siyuan Liang , Aishan Liu , Xiaojun Jia , Junhao Kuang , Xiaochun Cao

Large Language Models (LLMs) are powerful text generators, yet they can produce toxic or harmful content even when given seemingly harmless prompts. This presents a serious safety challenge and can cause real-world harm. Toxicity is often…

Computation and Language · Computer Science 2026-02-09 Himanshu Singh , Ziwei Xu , A. V. Subramanyam , Mohan Kankanhalli

As the AI systems become deeply embedded in social media platforms, we've uncovered a concerning security vulnerability that goes beyond traditional adversarial attacks. It becomes important to assess the risks of LLMs before the general…

Computation and Language · Computer Science 2025-05-30 Nilanjana Das , Edward Raff , Aman Chadha , Manas Gaur

This study sheds light on the imperative need to bolster safety and privacy measures in large language models (LLMs), such as GPT-4 and LLaMA-2, by identifying and mitigating their vulnerabilities through explainable analysis of prompt…

Cryptography and Security · Computer Science 2024-07-18 Dong Shu , Mingyu Jin , Tianle Chen , Chong Zhang , Yongfeng Zhang

Recently, various types of Text-to-Image (T2I) models have emerged (such as DALL-E and Stable Diffusion), and showing their advantages in different aspects. Therefore, some third-party service platforms collect different model interfaces…

Computer Vision and Pattern Recognition · Computer Science 2025-05-30 Ji Guo , Wenbo Jiang , Rui Zhang , Guoming Lu , Hongwei Li

Backdoor attacks are rapidly emerging threats to deep neural networks (DNNs). In the backdoor attack scenario, attackers usually implant the backdoor into the target model by manipulating the training dataset or training process. Then, the…

Cryptography and Security · Computer Science 2022-05-09 Nan Zhong , Zhenxing Qian , Xinpeng Zhang

The remarkable ability of diffusion models to generate high-fidelity images has led to their widespread adoption. However, concerns have also arisen regarding their potential to produce Not Safe for Work (NSFW) content and exhibit social…

Computation and Language · Computer Science 2025-05-22 Zhiwen Li , Die Chen , Mingyuan Fan , Cen Chen , Yaliang Li , Yanhao Wang , Wenmeng Zhou

Recently, large language models (LLMs) have garnered widespread attention for their exceptional capabilities. Prompts are central to the functionality and performance of LLMs, making them highly valuable assets. The increasing reliance on…

Cryptography and Security · Computer Science 2025-06-13 Yong Yang , Changjiang Li , Qingming Li , Oubo Ma , Haoyu Wang , Zonghui Wang , Yandong Gao , Wenzhi Chen , Shouling Ji

Large Language Models (LLMs) are vulnerable to adversarial prompt based injects. These injects could jailbreak or exploit vulnerabilities within these models with explicit prompt requests leading to undesired responses. In the context of…

Cryptography and Security · Computer Science 2025-02-18 Jonathan Pan , Swee Liang Wong , Yidi Yuan , Xin Wei Chia

In recent years, there has been a rapid proliferation of AI-generated text, primarily driven by the release of powerful pre-trained language models (PLMs). To address the issue of misuse associated with AI-generated text, various…

Computation and Language · Computer Science 2023-10-10 Tharindu Kumarage , Paras Sheth , Raha Moraffah , Joshua Garland , Huan Liu

Voice Processing Systems (VPSes), now widely deployed, have been made significantly more accurate through the application of recent advances in machine learning. However, adversarial machine learning has similarly advanced and has been used…

Cryptography and Security · Computer Science 2019-04-12 Hadi Abdullah , Washington Garcia , Christian Peeters , Patrick Traynor , Kevin R. B. Butler , Joseph Wilson

In recent years, diffusion models have achieved remarkable success in the realm of high-quality image generation, garnering increased attention. This surge in interest is paralleled by a growing concern over the security threats associated…

Machine Learning · Computer Science 2024-06-04 Sen Li , Junchi Ma , Minhao Cheng

The prosperous development of Artificial Intelligence-Generated Content (AIGC) has brought people's anxiety about the spread of false information on social media. Designing detectors for filtering is an effective defense method, but most…

Cryptography and Security · Computer Science 2025-12-11 Xiaojing Chen , Dan Li , Lijun Peng , Jun YanŁetter , Zhiqing Guo , Junyang Chen , Xiao Lan , Zhongjie Ba , Yunfeng DiaoŁetter

We demonstrate how AI-powered cybersecurity tools can be turned against themselves through prompt injection attacks. Prompt injection is reminiscent of cross-site scripting (XSS): malicious text is hidden within seemingly trusted content,…

Cryptography and Security · Computer Science 2025-11-18 Víctor Mayoral-Vilches , Per Mannermaa Rynning

General purpose segmentation models are able to generate (semantic) segmentation masks from a variety of prompts, including visual (points, boxed, etc.) and textual (object names) ones. In particular, input images are pre-processed by an…

Computer Vision and Pattern Recognition · Computer Science 2023-11-27 Francesco Croce , Matthias Hein

Generative models such as GANs and diffusion models are widely used to synthesize photorealistic images and to support downstream creative and editing tasks. While adversarial attacks on discriminative models are well studied, attacks…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Mostafa Mohaimen Akand Faisal , Rabeya Amin Jhuma