Tootfinder

FARFETCH'D: A Side-Channel Analysis Framework for Privacy Applications on Confidential Virtual Machines
Ruiyi Zhang, Albert Cheu, Adria Gascon, Daniel Moghimi, Phillipp Schoppmann, Michael Schwarz, Octavian Suciu
https://arxiv.org/abs/2506.15924

FARFETCH'D: A Side-Channel Analysis Framework for Privacy Applications on Confidential Virtual Machines
Confidential virtual machines (CVMs) based on trusted execution environments (TEEs) enable new privacy-preserving solutions. Yet, they leave side-channel leakage outside their threat model, shifting the responsibility of mitigating such attacks to developers. However, mitigations are either not generic or too slow for practical use, and developers currently lack a systematic, efficient way to measure and compare leakage across real-world deployments. In this paper, we present FARFETCH'D, an ope…

Strict limits on potential secondary atmospheres on the temperate rocky exo-Earth TRAPPIST-1 d
Caroline Piaulet-Ghorayeb, Bj\"orn Benneke, Martin Turbet, Keavin Moore, Pierre-Alexis Roy, Olivia Lim, Ren\'e Doyon, Thomas J. Fauchez, Lo\"ic Albert, Michael Radica, Louis-Philippe Coulombe, David Lafreni\`ere, Nicolas B. Cowan, Danika Belzile, Kamrul Musfirat, Mehramat Kaur, Alexandrine L'Heureux, Doug Johnstone, Ryan J. MacDonald, Romain Allart, Lisa Dang, Lisa Kaltenegg…

Strict limits on potential secondary atmospheres on the temperate rocky exo-Earth TRAPPIST-1 d
The nearby TRAPPIST-1 system, with its seven small rocky planets orbiting a late-type M8 star, offers an unprecedented opportunity to search for secondary atmospheres on temperate terrestrial worlds. In particular, the 0.8 Earth-radii planet TRAPPIST-1 d lies at the edge of the habitable zone (equilibrium temperature ~262 K). Here we present the first 0.6-5.2 micron NIRSpec/PRISM transmission spectrum of TRAPPIST-1 d from two transits with JWST. We find that stellar contamination from unocculte…

DigiT4TAF -- Bridging Physical and Digital Worlds for Future Transportation Systems
Maximilian Zipfl, Pascal Zwick, Patrick Schulz, Marc Rene Zofka, Albert Schotschneider, Helen Gremmelmaier, Nikolai Polley, Ferdinand M\"utsch, Kevin Simon, Fabian Gottselig, Michael Frey, Sergio Marschall, Akim Stark, Maximilian M\"uller, Marek Wehmer, Mihai Kocsis, Dominic Waldenmayer, Florian Schnepf, Erik Heinrich, Sabrina Pletz, Matthias K\"olle, Karin Langbein-Euchner, Alexander Vie…

DigiT4TAF -- Bridging Physical and Digital Worlds for Future Transportation Systems
In the future, mobility will be strongly shaped by the increasing use of digitalization. Not only will individual road users be highly interconnected, but also the road and associated infrastructure. At that point, a Digital Twin becomes particularly appealing because, unlike a basic simulation, it offers a continuous, bilateral connection linking the real and virtual environments. This paper describes the digital reconstruction used to develop the Digital Twin of the Test Area Autonomous Drivi…

JWST observations of the Ring Nebula (NGC 6720) -- II. PAH emission
Nicholas Clark, Els Peeters, Nick L. J. Cox, Jan Cami, Michael J. Barlow, Patrick J. Kavanagh, Griet Van de Steene, Mikako Matsuura, Albert Zijlstra, Isabel Aleman, Jeronimo Bernard-Salas, Harriet L. Dinerstein, Kay Justtanont, Kyle F. Kaplan, Arturo Manchado, Raghvendra Sahai, Peter van Hoof, Kevin Volk, Roger Wesson

JWST observations of the Ring Nebula (NGC 6720) -- II. PAH emission
Polycyclic aromatic hydrocarbons (PAHs) and carbonaceous dust have been observed in clumpy circumstellar environments, yet their formation and evolutionary pathways in such environments remain elusive. We aim to characterize the PAH emission in a clumpy planetary nebula to decipher their formation and evolution pathways. We obtained JWST Near-Infrared Spectrograph (NIRSpec) and Mid-Infrared Instrument (MIRI) integral field unit spectroscopic observations of two individual knots in the Ring Nebu…

Post-estimation Adjustments in Data-driven Decision-making with Applications in Pricing
Michael Albert, Max Biggs, Ningyuan Chen, Guan Wang
https://arxiv.org/abs/2507.20501 http…

Post-estimation Adjustments in Data-driven Decision-making with Applications in Pricing
The predict-then-optimize (PTO) framework is a standard approach in data-driven decision-making, where a decision-maker first estimates an unknown parameter from historical data and then uses this estimate to solve an optimization problem. While widely used for its simplicity and modularity, PTO can lead to suboptimal decisions because the estimation step does not account for the structure of the downstream optimization problem. We study a class of problems where the objective function, evaluat…

An Empirical Study of GenAI Adoption in Open-Source Game Development: Tools, Tasks, and Developer Challenges
Xiang Echo Chen, Wenhan Zhu, Guoshuai Albert Shi, Michael W. Godfrey
https://arxiv.org/abs/2507.18029

An Empirical Study of GenAI Adoption in Open-Source Game Development: Tools, Tasks, and Developer Challenges
The growing capabilities of generative AI (GenAI) have begun to reshape how games are designed and developed, offering new tools for content creation, gameplay simulation, and design ideation. While prior research has explored traditional uses of AI in games, such as controlling agents or generating procedural content. There is limited empirical understanding of how GenAI is adopted by developers in real-world contexts, especially within the open-source community. This study aims to explore how…

Weyl-Superconductivity revealed by Edge Mode mediated Nonlocal Transport
Wenyao Liu, Gabriel Natale, Camron Farhang, Michael Geiwitz, Kewen Huang, Qishuo Tan, Xingyao Guo, Mason Gray, Vincent Lamberti, Jazzmin Victorin, Huairuo Zhang, James L. Hart, Vsevolod Belosevich, Xi Ling, Qiong Ma, Wan Kyu Park, Kenji Watanabe, Takashi Taniguchi, Judy J. Cha, Albert V. Davydov, Kin Chung Fong, Ethan Arnault, Genda Gu, Rui-Xing Zhang, Enrico Rossi, Jing Xia, Kenneth S. Burch

Weyl-Superconductivity revealed by Edge Mode mediated Nonlocal Transport
Topological superconductivity (TSC) hosts exotic modes enabling error-free quantum computation and low-temperature spintronics. Despite preliminary evidence of edge modes, unambiguous signatures remain undetected. Here, we report the first observation of protected, non-local transport from the edge modes of the potential Weyl-superconductor \ch{FeTe_{0.55}Se_{0.45}}. Namely resonant charge injection, ballistic transport, and extraction via edge modes. An anomalous conductance plateau emerges on…

JWST NIRISS Transmission Spectroscopy of the Super-Earth GJ 357b, a Favourable Target for Atmospheric Retention
Jake Taylor, Michael Radica, Richard D. Chatterjee, Mark Hammond, Tobias Meier, Suzanne Aigrain, Ryan J. MacDonald, Loic Albert, Bj\"orn Benneke, Louis-Philippe Coulombe, Nicolas B. Cowan, Lisa Dang, Ren\'e Doyon, Laura Flagg, Doug Johnstone, Lisa Kaltenegger, David Lafreni\`ere, Stefan Pelletier, Caroline Piaulet-Ghorayeb, Jason F. Rowe, Pierre-Alexis Roy

JWST NIRISS Transmission Spectroscopy of the Super-Earth GJ 357b, a Favourable Target for Atmospheric Retention
We present a JWST NIRISS/SOSS transmission spectrum of the super-Earth GJ 357 b: the first atmospheric observation of this exoplanet. Despite missing the first $\sim$40 % of the transit due to using an out-of-date ephemeris, we still recover a transmission spectrum that does not display any clear signs of atmospheric features. We perform a search for Gaussian-shaped absorption features within the data but find that this analysis yields comparable fits to the observations as a flat line. We comp…

Continuous helium absorption from the leading and trailing tails of WASP-107b
Vigneshwaran Krishnamurthy, Yann Carteret, Caroline Piaulet-Ghorayeb, Jared Splinter, Dhvani Doshi, Michael Radica, Louis-Philippe Coulombe, Romain Allart, Vincent Bourrier, Nicolas B. Cowan, David Lafreni\`ere, Lo\"ic Albert, Lisa Dang, Ray Jayawardhana, Doug Johnstone, Lisa Kaltenegger, Adam B. Langeveld, Stefan Pelletier, Jason F. Rowe, Pierre-Alexis Roy, Jake Taylor, Jake D. Turner

Continuous helium absorption from the leading and trailing tails of WASP-107b
The detection of helium escaping the atmosphere of exoplanets has revolutionized our understanding of atmospheric escape and exoplanetary evolution. Using high-precision spectroscopic observations from the James Webb Space Telescope (JWST) NIRISS-SOSS mode, we report the detection of significant helium absorption during the pre-transit phase of WASP-107b (17$σ$), as well as in the transit and post-transit phases. This unique continuous helium absorption begins approximately 1.5 hours before th…