Security and Usability Challenges of Moving-Object CAPTCHAs: Decoding Codewords in Motion. - Yi Xu 006; Gerardo Reynaga; Sonia Chiasson; Jan-Michael Frahm; Fabian Monrose; Paul C. van Oorschot (USENIX Security Symposium, 2012)

Seeing double: reconstructing obscured typed input from repeated compromising reflections. - Yi Xu 006; Jared Heinly; Andrew M. White 002; Fabian Monrose; Jan-Michael Frahm (CCS, 2013)

On the Privacy Risks of Virtual Keyboards: Automatic Reconstruction of Typed Input from Compromising Reflections. - Rahul Raguram; Andrew M. White 002; Yi Xu 006; Jan-Michael Frahm; Pierre Georgel; Fabian Monrose (IEEE Trans. Dependable Secur. Comput., 2013)

Watching the Watchers: Automatically Inferring TV Content From Outdoor Light Effusions. - Yi Xu 006; Jan-Michael Frahm; Fabian Monrose (CCS, 2014)

Security Analysis and Related Usability of Motion-Based CAPTCHAs: Decoding Codewords in Motion. - Yi Xu 006; Gerardo Reynaga; Sonia Chiasson; Jan-Michael Frahm; Fabian Monrose; Paul C. van Oorschot (IEEE Trans. Dependable Secur. Comput., 2014)

Virtual U: Defeating Face Liveness Detection by Building Virtual Models from Your Public Photos. - Yi Xu 006; True Price; Jan-Michael Frahm; Fabian Monrose (USENIX Security Symposium, 2016)

Toward Robust Video Event Detection and Retrieval Under Adversarial Constraints. - Yi Xu 006 (2016)

Caught Red-Handed: Toward Practical Video-Based Subsequences Matching in the Presence of Real-World Transformations. - Yi Xu 006; True Price; Fabian Monrose; Jan-Michael Frahm (CVPR Workshops, 2017)