Investigating Membership Inference Attacks under Data Dependencies. Thomas Humphries, Simon Oya, Lindsey Tulloch, Matthew Rafuse, Ian Goldberg, Urs Hengartner, and Florian Kerschbaum. In Computer Security Foundations Symposium (CSF), 2023.
Publications
IHOP: Improved Statistical Query Recovery against Searchable Symmetric Encryption through Quadratic Optimization. Simon Oya, and Florian Kerschbaum. In USENIX Security Symposium, pp. 2407-2424, 2022. [Slides]
Hiding the Access Pattern is Not Enough: Exploiting Search Pattern Leakage in Searchable Encryption. Simon Oya, and Florian Kerschbaum. In USENIX Security Symposium, pp. 127-142, 2021. [Slides]
Obfuscated Access and Search Patterns in Searchable Encryption. Zhiwei Shang, Simon Oya, Andreas Peter, and Florian Kerschbaum. In Network and Distributed System Security Symposium (NDSS), 2021. [Slides]
Practical Over-Threshold Multi-Party Private Set Intersection. Rasoul Akhavan Mahdavi, Thomas Humphries, Bailey Kacsmar, Simeon Krastnikov, Nils Lukas, John Abraham Premkumar, Masoumeh Shafieinejad, Simon Oya, Florian Kerschbaum, and Erik-Oliver Blass. In Annual Computer Security Applications Conference (ACSAC), pp. 772-783, 2020.
Differentially Private Two-Party Set Operations. Bailey Kacsmar, Basit Khurram, Nils Lukas, Alexander Norton, Masoumeh Shafieinejad, Zhiwei Shang, Yasser Baseri, Maryam Sepehri, Simon Oya, and Florian Kerschbaum. In IEEE European Symposium on Security and Privacy (EuroS&P), pp. 390-404, 2020.
PhD Thesis: A Statistical Approach to the Design of Privacy-Preserving Services. Simon Oya. Supervised by Carmela Troncoso and Fernando Pérez-González. Defended on July 05, 2019.
Rethinking Location Privacy for Unknown Mobility Behaviors. Simon Oya, Carmela Troncoso, and Fernando Pérez-González. In IEEE European Symposium on Security and Privacy (EuroS&P), pp. 416-431, 2019. [Slides]
Is Geo-Indistinguishability What You Are Looking for?. Simon Oya, Carmela Troncoso, and Fernando Pérez-González. In ACM Workshop on Privacy in the Electronic Society (WPES), pp. 137-140, 2017. [Slides]
Back to the Drawing Board: Revisiting the Design of Optimal Location Privacy-Preserving Mechanisms. Simon Oya, Carmela Troncoso, and Fernando Pérez-González. In ACM SIGSAC Conference on Computer and Communications Security (CCS), pp. 1959-1972, 2017. [Slides]
Filter Design for Delay-Based Anonymous Communication Systems. Simon Oya, Fernando Pérez-González, and Carmela Troncoso. In IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), pp. 2107-2111, 2017. [Poster]
Design of Pool Mixes Against Profiling Attacks in Real Conditions. Simon Oya, Fernando Pérez-González, and Carmela Troncoso. In IEEE/ACM Transactions on Networking (TNET), vol. 24, no. 6, pp. 3662-3675, 2016.
Understanding the Effects of Real-World Behavior in Statistical Disclosure Attacks. Simon Oya, Carmela Troncoso, and Fernando Pérez-González. In International Workshop on Information Forensics and Security (WIFS), pp. 72-77, 2014. [Slides]
Do Dummies Pay Off? Limits of Dummy Traffic Protection in Anonymous Communications. Simon Oya, Carmela Troncoso, and Fernando Pérez-González. In International Symposium on Privacy Enhancing Technologies (PETS), pp. 204-223, 2014. [Technical Report] [Slides]
A Least Squares Approach to the Static Traffic Analysis of High-Latency Anonymous Communication Systems. Fernando Pérez-González, Carmela Troncoso, and Simon Oya. In IEEE Transactions on Information Forensics and Security (TIFS), vol. 9, no. 9, pp. 1341-1355, 2014. [Technical Report]
Meet the Family of Statistical Disclosure Attacks. Simon Oya, Carmela Troncoso, and Fernando Pérez-González. In IEEE Global Conference on Signal and Information Processing (GlobalSIP), pp. 223-236, 2013. [Poster]