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The advent of Large Language Models (LLMs) has revolutionized various applications by providing advanced natural language processing capabilities. However, this innovation introduces new cybersecurity challenges. This paper explores the…

Cryptography and Security · Computer Science 2024-06-18 Stephen Burabari Tete

Recently, powerful Large Language Models (LLMs) have become easily accessible to hundreds of millions of users world-wide. However, their strong capabilities and vast world knowledge do not come without associated privacy risks. In this…

Machine Learning · Computer Science 2024-11-05 Hanna Yukhymenko , Robin Staab , Mark Vero , Martin Vechev

Advanced Persistent Threats (APTs) are among the most challenging cyberattacks to detect. They are carried out by highly skilled attackers who carefully study their targets and operate in a stealthy, long-term manner. Because APTs exhibit…

LLMs are now an integral part of information retrieval. As such, their role as question answering chatbots raises significant concerns due to their shown vulnerability to adversarial man-in-the-middle (MitM) attacks. Here, we propose the…

Cryptography and Security · Computer Science 2026-03-25 Alina Fastowski , Bardh Prenkaj , Yuxiao Li , Gjergji Kasneci

Threat actors can be persistent, motivated and agile, and leverage a diversified and extensive set of tactics and techniques to attain their goals. In response to that, defenders establish threat intelligence programs to stay…

Cryptography and Security · Computer Science 2021-03-30 Vasileios Mavroeidis , Audun Jøsang

The increasing complexity and scale of modern digital environments have exposed significant gaps in traditional cybersecurity penetration testing methods, which are often time-consuming, labor-intensive, and unable to rapidly adapt to…

Cryptography and Security · Computer Science 2024-09-09 Ibrahim Alshehri , Adnan Alshehri , Abdulrahman Almalki , Majed Bamardouf , Alaqsa Akbar

Recommender systems (RS) are increasingly vulnerable to shilling attacks, where adversaries inject fake user profiles to manipulate system outputs. Traditional attack strategies often rely on simplistic heuristics, require access to…

Information Retrieval · Computer Science 2025-05-21 Shengkang Gu , Jiahao Liu , Dongsheng Li , Guangping Zhang , Mingzhe Han , Hansu Gu , Peng Zhang , Ning Gu , Li Shang , Tun Lu

Insider threat detection presents a significant challenge due to the deceptive nature of malicious behaviors, which often resemble legitimate user operations. However, existing approaches typically model system logs as flat event sequences,…

Cryptography and Security · Computer Science 2025-08-11 Kaichuan Kong , Dongjie Liu , Xiaobo Jin , Zhiying Li , Guanggang Geng

Deep Research (DR) agents built on Large Language Models (LLMs) can perform complex, multi-step research by decomposing tasks, retrieving online information, and synthesizing detailed reports. However, the misuse of LLMs with such powerful…

Cryptography and Security · Computer Science 2025-10-24 Shuo Chen , Zonggen Li , Zhen Han , Bailan He , Tong Liu , Haokun Chen , Georg Groh , Philip Torr , Volker Tresp , Jindong Gu

Evaluations of large language model (LLM) risks and capabilities are increasingly being incorporated into AI risk management and governance frameworks. Currently, most risk evaluations are conducted by designing inputs that elicit harmful…

Despite advancements in machine learning for security, rule-based detection remains prevalent in Security Operations Centers due to the resource intensiveness and skill gap associated with ML solutions. While traditional rule-based methods…

Cryptography and Security · Computer Science 2025-12-10 Sadegh Momeni , Ge Zhang , Birkett Huber , Hamza Harkous , Sam Lipton , Benoit Seguin , Yanis Pavlidis

Cybersecurity post-incident reviews are essential for identifying control failures and improving organisational resilience, yet they remain labour-intensive, time-consuming, and heavily reliant on expert judgment. This paper investigates…

Cryptography and Security · Computer Science 2026-01-08 Huan Lin Oh , Jay Yong Jun Jie , Mandy Lee Ling Siu , Jonathan Pan

Phishing sites continue to grow in volume and sophistication. Recent work leverages large language models (LLMs) to analyze URLs, HTML, and rendered content to decide whether a website is a phishing site. While these approaches are…

Cryptography and Security · Computer Science 2026-02-06 Takashi Koide , Hiroki Nakano , Daiki Chiba

Despite the growing capabilities of autonomous agents powered by large language models (LLMs), their adoption in high-stakes domains remains limited. A key barrier is security: the inherently nondeterministic behavior of LLM agents defies…

Software Engineering · Computer Science 2026-02-12 Adam AlSayyad , Kelvin Yuxiang Huang , Richik Pal

Large language model (LLM) agents have demonstrated remarkable capabilities in complex reasoning and decision-making by leveraging external tools. However, this tool-centric paradigm introduces a previously underexplored attack surface,…

Artificial Intelligence · Computer Science 2026-01-08 Kanghua Mo , Li Hu , Yucheng Long , Zhihao Li

Amidst escalating concerns about the detriments inflicted by AI systems, risk management assumes paramount importance, notably for high-risk applications as demanded by the European Union AI Act. Guidelines provided by ISO and NIST aim to…

Computers and Society · Computer Science 2024-06-19 sundaraparipurnan Narayanan , Sandeep Vishwakarma

Cryptocurrency investment is inherently difficult due to its shorter history compared to traditional assets, the need to integrate vast amounts of data from various modalities, and the requirement for complex reasoning. While deep learning…

Trading and Market Microstructure · Quantitative Finance 2025-01-08 Yichen Luo , Yebo Feng , Jiahua Xu , Paolo Tasca , Yang Liu

Large Vision-Language Models (LVLMs) empower autonomous mobile agents, yet their security under realistic mobile deployment constraints remains underexplored. While agents are vulnerable to visual prompt injections, stealthily executing…

Cryptography and Security · Computer Science 2026-04-10 Renhua Ding , Xiao Yang , Zhengwei Fang , Jun Luo , Kun He , Jun Zhu

Today, the training of large language models (LLMs) can involve personally identifiable information and copyrighted material, incurring dataset misuse. To mitigate the problem of dataset misuse, this paper explores \textit{dataset…

Cryptography and Security · Computer Science 2025-12-09 Ruikai Zhou , Kang Yang , Xun Chen , Wendy Hui Wang , Guanhong Tao , Jun Xu

Cyber threat intelligence (CTI) is central to modern cybersecurity, providing critical insights for detecting and mitigating evolving threats. With the natural language understanding and reasoning capabilities of large language models…

Cryptography and Security · Computer Science 2025-10-15 Yutong Cheng , Yang Liu , Changze Li , Dawn Song , Peng Gao