Selected Publications

Usenix Security 2025 – There is growing awareness that the analysis of personal data, such as individuals' mobility, financial, and health data, can provide significant benefits to society. However, liberal societies have so …

NDSS'26 – The voluntary donation of private health information for altruistic purposes, such as supporting research advancements, is a common practice. However, concerns about data misuse and leakage may deter people from …

Under Submission – The integrity of many location-based services depends on the veracity of locations reported by users. Unfortunately, mobile platform software, apps and users can easily forge their locations, and nearby …

USENIX Security 2022 – Network side channels (NSCs) leak secrets through packet timing and packet sizes. They are of particular concern in public IaaS Clouds, where any tenant may be able to colocate and indirectly observe a …

Scientific Reports 12 (1) 1-14 (authors listed in alphabetical order) – During the ongoing COVID-19 pandemic, there have been burgeoning efforts to develop and deploy smartphone apps to expedite contact tracing and risk …

MobiSys 2019 – New applications enabled by personal smart devices and the Internet-of-Things (IoT) require communication in the context of periods of spatial co-location. Examples of this encounter-based communication (EbC) …