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Online social networks, such as Facebook and twitter, are a growing phenomenon in today's world, with various platforms providing capabilities for individuals to collaborate through messaging and chatting as well as sharing of content such…

社会与信息网络 · 计算机科学 2020-01-14 Newton Masinde , Kalman Graffi

Location privacy is critical in vehicular networks, where drivers' trajectories and personal information can be exposed, allowing adversaries to launch data and physical attacks that threaten drivers' safety and personal security. This…

密码学与安全 · 计算机科学 2025-01-09 Baihe Ma , Xu Wang , Xiaojie Lin , Yanna Jiang , Caijun Sun , Zhe Wang , Guangsheng Yu , Suirui Zhu , Ying He , Wei Ni , Ren Ping Liu

Prevention of stroke with its associated risk factors has been one of the public health priorities worldwide. Emerging artificial intelligence technology is being increasingly adopted to predict stroke. Because of privacy concerns, patient…

With 3.78 billion social media users worldwide in 2021 (48% of the human population), almost 3 billion images are shared daily. At the same time, a consistent evolution of smartphone cameras has led to a photography explosion with 85% of…

计算机视觉与模式识别 · 计算机科学 2022-04-05 Harichandana B S S , Vibhav Agarwal , Sourav Ghosh , Gopi Ramena , Sumit Kumar , Barath Raj Kandur Raja

Recently, it is shown that shuffling can amplify the central differential privacy guarantees of data randomized with local differential privacy. Within this setup, a centralized, trusted shuffler is responsible for shuffling by keeping the…

密码学与安全 · 计算机科学 2022-07-05 Seng Pei Liew , Tsubasa Takahashi , Shun Takagi , Fumiyuki Kato , Yang Cao , Masatoshi Yoshikawa

With the wide adoption of handheld devices (e.g. smartphones, tablets) a large number of location-based services (also called LBSs) have flourished providing mobile users with real-time and contextual information on the move. Accounting for…

密码学与安全 · 计算机科学 2014-10-29 Vincent Primault , Sonia Ben Mokhtar , Cedric Lauradoux , Lionel Brunie

Offering an architecture for social networking in which people have agency over their personal information and social graph is an open challenge. Here we present a grassroots architecture for serverless, permissionless, peer-to-peer social…

分布式、并行与集群计算 · 计算机科学 2024-05-02 Ehud Shapiro

Cooperative spectrum sensing, despite its effectiveness in enabling dynamic spectrum access, suffers from location privacy threats, merely because secondary users (SUs)' sensing reports that need to be shared with a fusion center to make…

网络与互联网体系结构 · 计算机科学 2018-07-18 Mohamed Grissa , Attila Yavuz , Bechir Hamdaoui

Sensors embedded in mobile smart devices can monitor users' activity with high accuracy to provide a variety of services to end-users ranging from precise geolocation, health monitoring, and handwritten word recognition. However, this…

密码学与安全 · 计算机科学 2022-05-16 Rahat Masood , Wing Yan Cheng , Dinusha Vatsalan , Deepak Mishra , Hassan Jameel Asghar , Mohamed Ali Kaafar

In this paper, we review the state of the art of privacy-preserving schemes for ad hoc social networks, including, mobile social networks (MSNs) and vehicular social networks (VSNs). Specifically, we select and in-detail examine…

密码学与安全 · 计算机科学 2016-10-20 Mohamed Amine Ferrag , Leandros Maglaras , Ahmed Ahmim

Privacy-Preserving Cloud Computing is an emerging technology with many applications in various fields. Cloud computing is important because it allows for scalability, adaptability, and improved security. Likewise, privacy in cloud computing…

密码学与安全 · 计算机科学 2022-04-26 Saeed Ahmadi , Maliheh Salehfar

Advances in deep learning algorithms have enabled better-than-human performance on face recognition tasks. In parallel, private companies have been scraping social media and other public websites that tie photos to identities and have built…

计算机视觉与模式识别 · 计算机科学 2020-12-17 Ivan Evtimov , Pascal Sturmfels , Tadayoshi Kohno

Online social networks have enabled new methods and modalities of collaboration and sharing. These advances bring privacy concerns: online social data is more accessible and persistent and simultaneously less contextualized than traditional…

社会与信息网络 · 计算机科学 2014-06-11 Tehila Minkus , Nasir Memon

With smartphone technologies enhanced way of interacting with the world around us, it has also been paving the way for easier access to our private and personal information. This has been amplified by the existence of numerous embedded…

密码学与安全 · 计算机科学 2020-07-10 Tanusree Sharma , Masooda Bashir

Blockchains provide environments where parties can interact transparently and securely peer-to-peer without needing a trusted third party. Parties can trust the integrity and correctness of transactions and the verifiable execution of…

密码学与安全 · 计算机科学 2023-03-02 Simon Tschirner , Shashank Shekher Tripathi , Mathias Roeper , Markus M. Becker , Volker Skwarek

Contact tracing is being widely employed to combat the spread of COVID-19. Many apps have been developed that allow for tracing to be done automatically based off location and interaction data generated by users. There are concerns,…

密码学与安全 · 计算机科学 2020-04-09 James Bell , David Butler , Chris Hicks , Jon Crowcroft

This work introduces PAS -- Privacy Anchor Substitution, a structured mechanism for enabling user location privacy in spatial retrieval-augmented generation (RAG) systems. Unlike conventional differential privacy methods that directly…

密码学与安全 · 计算机科学 2026-05-08 Kennedy Edemacu , Mohammad Mahdi Shokri , Vinay M. Shashidhar , Jong Wook Kim

Secure cloud storage is an issue of paramount importance that both businesses and end-users should take into consideration before moving their data to, potentially, untrusted clouds. Migrating data to the cloud raises multiple privacy…

密码学与安全 · 计算机科学 2022-05-09 Alexandros Bakas , Antonis Michalas

Existing Location-based social networks (LBSNs), e.g., Foursquare, depend mainly on GPS or cellular-based localization to infer users' locations. However, GPS is unavailable indoors and cellular-based localization provides coarse-grained…

计算机与社会 · 计算机科学 2016-07-22 Moustafa Elhamshary , Anas Basalamah , Moustafa Youssef

Off-grid networks are recently emerging as a solution to connect the unconnected or provide alternative services to networks of possibly untrusted participants. The systems currently used, however, exhibit limitations due to their…

分布式、并行与集群计算 · 计算机科学 2020-07-09 Harris Niavis , Nikolaos Papadis , Leandros Tassiulas