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The rapid evolution of Large Language Models (LLMs) has unlocked new possibilities for applying artificial intelligence across a wide range of fields, including privacy engineering. As modern applications increasingly handle sensitive user…

Cryptography and Security · Computer Science 2025-09-09 Majid Mollaeefar , Andrea Bissoli , Silvio Ranise

The widespread availability of large-scale code datasets has fueled the rapid development of large language models (LLMs) for code-related tasks. These datasets may include sensitive personally identifiable information (PII), which can lead…

Software Engineering · Computer Science 2026-05-18 Yifei Ge , Zhenpeng Chen , Weisong Sun , Yuchen Chen , Chunrong Fang , Juan Zhai , Xiaofang Zhang , Xia Feng , Yang Liu , Zhenyu Chen

Personalized LLMs can significantly enhance user experiences by tailoring responses to preferences such as helpfulness, conciseness, and humor. However, fine-tuning models to address all possible combinations of user preferences is…

Computation and Language · Computer Science 2026-05-11 Jinyan Su , Jinpeng Zhou , Claire Cardie , Wen Sun

The adoption of Large Language Models (LLMs) has revolutionized AI applications but poses significant challenges in safeguarding user privacy. Ensuring compliance with privacy regulations such as GDPR and CCPA while addressing nuanced…

Cryptography and Security · Computer Science 2025-01-23 Shubhi Asthana , Bing Zhang , Ruchi Mahindru , Chad DeLuca , Anna Lisa Gentile , Sandeep Gopisetty

Public leaderboards increasingly suggest that large language models (LLMs) surpass human experts on benchmarks spanning academic knowledge, law, and programming. Yet most benchmarks are fully public, their questions widely mirrored across…

Artificial Intelligence · Computer Science 2026-03-18 Eshwar Reddy M , Sourav Karmakar

Large Language Models (LLMs) deployed in enterprise settings (e.g., as Microsoft 365 Copilot) face novel security challenges. One critical threat is prompt inference attacks: adversaries chain together seemingly benign prompts to gradually…

Cryptography and Security · Computer Science 2025-07-22 Andrii Balashov , Olena Ponomarova , Xiaohua Zhai

Large Language Models (LLMs) offer transformative solutions across many domains, but healthcare integration is hindered by strict data privacy constraints. Clinical narratives are dense with ambiguous acronyms, misinterpretation these…

Computation and Language · Computer Science 2026-03-26 Manjushree B. Aithal , Ph. D. , Alexander Kotz , James Mitchell , Ph. D

The emergence of Large Language Models (LLMs), including ChatGPT, is having a significant impact on a wide range of fields. While LLMs have been extensively researched for tasks such as code generation and text synthesis, their application…

Cryptography and Security · Computer Science 2025-02-17 Takashi Koide , Naoki Fukushi , Hiroki Nakano , Daiki Chiba

Large language model (LLM) applications, such as ChatGPT, are a powerful tool for online information-seeking (IS) and problem-solving tasks. However, users still face challenges initializing and refining prompts, and their cognitive…

Human-Computer Interaction · Computer Science 2024-02-12 Ben Wang , Jiqun Liu , Jamshed Karimnazarov , Nicolas Thompson

As privacy issues are receiving increasing attention within the Natural Language Processing (NLP) community, numerous methods have been proposed to sanitize texts subject to differential privacy. However, the state-of-the-art text…

Cryptography and Security · Computer Science 2023-09-04 Huimin Chen , Fengran Mo , Yanhao Wang , Cen Chen , Jian-Yun Nie , Chengyu Wang , Jamie Cui

Multimodal Large Language Models (MLLMs) enhance collaboration in Extended Reality (XR) environments by enabling flexible object and animation creation through the combination of natural language and visual inputs. However, visual data…

Cryptography and Security · Computer Science 2026-04-21 Jiangong Chen , Mingyu Zhu , Bin Li

Users increasingly rely on large language models (LLMs) for personal, emotionally charged, and socially sensitive conversations. However, prompts sent to cloud-hosted models can contain personally identifiable information (PII) that users…

Cryptography and Security · Computer Science 2025-11-18 Chelsea McMurray , Hayder Tirmazi

The increasing use of synthetic data generated by Large Language Models (LLMs) presents both opportunities and challenges in data-driven applications. While synthetic data provides a cost-effective, scalable alternative to real-world data…

Computation and Language · Computer Science 2025-07-25 Tevin Atwal , Chan Nam Tieu , Yefeng Yuan , Zhan Shi , Yuhong Liu , Liang Cheng

Prior work on LLM-based privacy focuses on norm judgment over synthetic vignettes, rather than how people think about a specific data practice and formulate their opinions. We address this gap by designing PrivacyReasoner, an agent…

Artificial Intelligence · Computer Science 2026-04-15 Yiwen Tu , Xuan Liu , Lianhui Qin , Haojian Jin

Large language models (LLMs) have significantly transformed the landscape of Natural Language Processing (NLP). Their impact extends across a diverse spectrum of tasks, revolutionizing how we approach language understanding and generations.…

Cryptography and Security · Computer Science 2025-06-13 Sara Abdali , Richard Anarfi , CJ Barberan , Jia He , Erfan Shayegani

While many online services provide privacy policies for end users to read and understand what personal data are being collected, these documents are often lengthy and complicated. As a result, the vast majority of users do not read them at…

Artificial Intelligence · Computer Science 2024-09-26 Bhanuka Silva , Dishanika Denipitiyage , Suranga Seneviratne , Anirban Mahanti , Aruna Seneviratne

The rapid advancements of large language models (LLMs) have raised public concerns about the privacy leakage of personally identifiable information (PII) within their extensive training datasets. Recent studies have demonstrated that an…

Cryptography and Security · Computer Science 2024-08-01 Xiaoyi Chen , Siyuan Tang , Rui Zhu , Shijun Yan , Lei Jin , Zihao Wang , Liya Su , Zhikun Zhang , XiaoFeng Wang , Haixu Tang

Recent studies have shown that large language models (LLMs) can infer private user attributes (e.g., age, location, gender) from user-generated text shared online, enabling rapid and large-scale privacy breaches. Existing…

Cryptography and Security · Computer Science 2026-04-21 Dong Yan , Jian Liang , Ran He , Tieniu Tan

When large language model (LLM) agents are increasingly deployed to automate tasks and interact with untrusted external data, prompt injection emerges as a significant security threat. By injecting malicious instructions into the data that…

Cryptography and Security · Computer Science 2026-02-05 Yizhu Wang , Sizhe Chen , Raghad Alkhudair , Basel Alomair , David Wagner

Impressive progress has been made in automated problem-solving by the collaboration of large language model (LLM) based agents. However, these automated capabilities also open avenues for malicious applications. In this paper, we study a…

Cryptography and Security · Computer Science 2026-04-16 Yuntao Du , Zitao Li , Bolin Ding , Yaliang Li , Hanshen Xiao , Jingren Zhou , Ninghui Li