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Local Differential Privacy (LDP) has been widely adopted to protect user privacy in decentralized data collection. However, recent studies have revealed that LDP protocols are vulnerable to data poisoning attacks, where malicious users…

Cryptography and Security · Computer Science 2025-03-07 Ting-Wei Liao , Chih-Hsun Lin , Yu-Lin Tsai , Takao Murakami , Chia-Mu Yu , Jun Sakuma , Chun-Ying Huang , Hiroaki Kikuchi

Gradient leakage attacks are considered one of the wickedest privacy threats in deep learning as attackers covertly spy gradient updates during iterative training without compromising model training quality, and yet secretly reconstruct…

Machine Learning · Computer Science 2021-12-28 Wenqi Wei , Ling Liu

Local differential privacy (LDP) has become a prominent notion for privacy-preserving data collection. While numerous LDP protocols and post-processing (PP) methods have been developed, selecting an optimal combination under different…

Cryptography and Security · Computer Science 2025-07-09 Berkay Kemal Balioglu , Alireza Khodaie , Mehmet Emre Gursoy

Collecting and analyzing evolving longitudinal data has become a common practice. One possible approach to protect the users' privacy in this context is to use local differential privacy (LDP) protocols, which ensure the privacy protection…

Cryptography and Security · Computer Science 2023-02-22 Héber H. Arcolezi , Carlos Pinzón , Catuscia Palamidessi , Sébastien Gambs

Fine-tuning large language models (LLMs) has become an essential strategy for adapting them to specialized tasks; however, this process introduces significant privacy challenges, as sensitive training data may be inadvertently memorized and…

Cryptography and Security · Computer Science 2025-05-02 Hao Du , Shang Liu , Yang Cao

Local Differential Privacy (LDP) is the gold standard trust model for privacy-preserving machine learning by guaranteeing privacy at the data source. However, its application to image data has long been considered impractical due to the…

Computer Vision and Pattern Recognition · Computer Science 2026-05-27 Yuanming Cao , Chengqi Li , Wenbo He

Federated learning is distributed model training across several clients without disclosing raw data. Despite advancements in data privacy, risks still remain. Differential Privacy (DP) is a technique to protect sensitive data by adding…

Machine Learning · Computer Science 2025-10-14 Tejash Varsani

Differential privacy (DP) offers a theoretical upper bound on the potential privacy leakage of analgorithm, while empirical auditing establishes a practical lower bound. Auditing techniques exist forDP training algorithms. However machine…

Cryptography and Security · Computer Science 2024-02-15 Karan Chadha , Matthew Jagielski , Nicolas Papernot , Christopher Choquette-Choo , Milad Nasr

Differential privacy (DP) is the de facto standard for private data release and private machine learning. Auditing black-box DP algorithms and mechanisms to certify whether they satisfy a certain DP guarantee is challenging, especially in…

Machine Learning · Computer Science 2022-05-30 Carles Domingo-Enrich , Youssef Mroueh

Differential privacy (DP) is a widely used approach for mitigating privacy risks when training machine learning models on sensitive data. DP mechanisms add noise during training to limit the risk of information leakage. The scale of the…

Machine Learning · Computer Science 2024-11-11 Bogdan Kulynych , Juan Felipe Gomez , Georgios Kaissis , Flavio du Pin Calmon , Carmela Troncoso

Differential privacy (DP) is crucial for safeguarding sensitive client information in federated learning (FL), yet traditional DP-FL methods rely predominantly on fixed gradient clipping thresholds. Such static clipping neglects significant…

Cryptography and Security · Computer Science 2026-03-26 Hao Zhou , Siqi Cai , Hua Dai , Geng Yang , Jing Luo , Hui Cai

Local differential privacy (LDP) is an emerging privacy standard to protect individual user data. One scenario where LDP can be applied is federated learning, where each user sends in his/her user gradients to an aggregator who uses these…

Cryptography and Security · Computer Science 2020-07-20 Hans Albert Lianto , Yang Zhao , Jun Zhao

Local differential privacy (LDP) is a strong notion of privacy for individual users that often comes at the expense of a significant drop in utility. The classical definition of LDP assumes that all elements in the data domain are equally…

Machine Learning · Computer Science 2020-07-29 Jayadev Acharya , Keith Bonawitz , Peter Kairouz , Daniel Ramage , Ziteng Sun

While Local Differential Privacy (LDP) serves as a foundational primitive for distributed data collection, its stringent noise injection requirement often leads to severe degradation in data utility. This degradation stems from the…

Machine Learning · Computer Science 2026-05-21 Youngmok Ha , Viktor Schlegel , Yidan Sun , Anil Anthony Bharath

Machine Learning (ML) models integrated with in-situ sensing offer transformative solutions for defect detection in Additive Manufacturing (AM), but this integration brings critical challenges in safeguarding sensitive data, such as part…

Machine Learning · Computer Science 2025-03-19 Fardin Jalil Piran , Prathyush P. Poduval , Hamza Errahmouni Barkam , Mohsen Imani , Farhad Imani

Privacy-preserving vector mean estimation is a crucial primitive in federated analytics. Existing practices usually resort to Local Differentiated Privacy (LDP) mechanisms that inject random noise into users' vectors when communicating with…

Cryptography and Security · Computer Science 2023-09-20 Jingyi Li , Guangjing Huang , Liekang Zeng , Lin Chen , Xu Chen

Differential Privacy can provide provable privacy guarantees for training data in machine learning. However, the presence of proofs does not preclude the presence of errors. Inspired by recent advances in auditing which have been used for…

Machine Learning · Computer Science 2022-03-29 Florian Tramer , Andreas Terzis , Thomas Steinke , Shuang Song , Matthew Jagielski , Nicholas Carlini

Tensor-valued data, increasingly common in distributed big data applications like autonomous driving and smart healthcare, poses unique challenges for privacy protection due to its multidimensional structure and the risk of losing critical…

Cryptography and Security · Computer Science 2025-09-12 Yachao Yuan , Xiao Tang , Yu Huang , Yingwen Wu , Jin Wang

In this paper, we systematize research on auditing Differential Privacy (DP) techniques, aiming to identify key insights and open challenges. First, we introduce a comprehensive framework for reviewing work in the field and establish three…

Cryptography and Security · Computer Science 2025-12-15 Meenatchi Sundaram Muthu Selva Annamalai , Borja Balle , Jamie Hayes , Georgios Kaissis , Emiliano De Cristofaro

Privacy-preserving data analysis has become a central challenge in modern statistics. At the same time, a long-standing goal in statistics is the development of adaptive procedures -- methods that achieve near-optimal performance across…

Statistics Theory · Mathematics 2025-12-17 T. Tony Cai , Abhinav Chakraborty , Lasse Vuursteen