Yohan Beugin

Title: SoK: Advances and Open Problems in Web Tracking Authors: Yash Vekaria*, Yohan Beugin*, Shaoor Munir, Gunes Acar, Nataliia Bielova, Steven Englehardt, Umar Iqbal, Alexandros Kapravelos, Pierre Laperdrix, Nick Nikiforakis, Jason Polakis, Franziska Ro…

I am attending USENIX Security 2026 and also presenting a poster on my latest work: Lessons from the Adoption and Deprecation of the Privacy Sandbox Web APIs.

I am attending PETS 2026 as artifact chair, chair for the web privacy session, and also presenting a poster on my latest work: Lessons from the Adoption and Deprecation of the Privacy Sandbox Web APIs.

I am giving a talk at UCalgary: Lessons from Analyzing Google’s Privacy Sandbox Proposals.

Title: Longitudinal Adoption and Deprecation of the Privacy Sandbox Web APIs Authors: Yohan Beugin, Paul Barford, Patrick McDaniel Abstract: While several web actors have been trying to reduce web tracking for years, it remains unclear how to achieve both…

I am attending IEEE S&P 2026 and presenting a poster on our recent SoK: Avances and Open Problems in Web Tracking.

I am giving a talk at UCDavis: Lessons from Analyzing Google’s Privacy Sandbox Proposals.

Title: Longitudinal Analyses of SAST Tools: A CodeQL Case Study Authors: Jean-Charles Noirot Ferrand, Kyle Domico, Yohan Beugin, Patrick McDaniel Abstract: Open-source software (OSS) pipelines rely on automated static analysis tools to prevent the introdu…

I am presenting a poster on my research on web tracking at the UW-Madison Day at the Capitol.

Title: oney Configs: Measuring The Emerging Exploitation of Cloud IP Authors: Eric Pauley, Yohan Beugin, Paul Barford, Patrick Traynor, Patrick McDaniel

The 2025 Web Almanac was released today, this is an annual "state of the web" report published by the HTTP Archive.

Title: Targeting Alignment: Extracting Safety Classifiers of Aligned LLMs Authors: Jean-Charles Noirot Ferrand, Yohan Beugin, Eric Pauley, Ryan Sheatsley, Patrick McDaniel Abstract: Alignment in large language models (LLMs) is used to enforce guidelines s…

Title: Technical Report: The Need for a (Research) Sandstorm through the Privacy Sandbox Authors: Yohan Beugin, Patrick McDaniel Abstract: The Privacy Sandbox, launched in 2019, is a series of proposals from Google to reduce ``cross-site and cross-app tra…

Overview of Typst, a new markup-based typesetting system and ecosystem that feels mature enough to start taking on and replacing LaTex for several use cases, and how I have started to use it for several documents like my CV and also my slides: https://yoh…

I have been recognized as a Distinguished Artifact Reviewer at the 34th USENIX Security Symposium (USENIX Security '25), three years in a row!

Title: LibIHT: A Hardware-Based Approach to Efficient and Evasion-Resistant Dynamic Binary Analysis Authors: Changyu Zhao, Yohan Beugin, Jean-Charles Noirot Ferrand, Quinn Burke, Guancheng Li, Patrick McDaniel Abstract: Dynamic program analysis is invalua…

I have been recognized as a Distinguished Artifact Reviewer at the 25th Privacy Enhancing Technologies Symposium (PETS 2025).

Title: On the Robustness Tradeoff in Fine-Tuning Authors: Kunyang Li, Jean-Charles Noirot Ferrand, Ryan Sheatsley, Blaine Hoak, Yohan Beugin, Eric Pauley, Patrick McDaniel Abstract: Fine-tuning has become the standard practice for adapting pre-trained (up…

Title: SoK: Advances and Open Problems in Web Tracking Authors: Yash Vekaria, Yohan Beugin, Shaoor Munir, Gunes Acar, Nataliia Bielova, Steven Englehardt, Umar Iqbal, Alexandros Kapravelos, Pierre Laperdrix, Nick Nikiforakis, Jason Polakis, Franziska Roes…

I am excited to be in Mountain View, CA for the Google Research Conference on Ads Privacy.

The research proposal written with my advisor has been shortlisted as finalist for the SAMSUNG START program.

Title: Efficient Storage Integrity in Adversarial Settings Authors: Quinn Burke, Ryan Sheatsley, Yohan Beugin, Eric Pauley, Owen Hines, Michael Swift, Patrick McDaniel Abstract: Storage integrity is essential to systems and applications that use untrusted…

Title: Targeting Alignment: Extracting Safety Classifiers of Aligned LLMs Authors: Jean-Charles Noirot Ferrand, Yohan Beugin, Eric Pauley, Ryan Sheatsley, Patrick McDaniel Abstract: Alignment in large language models (LLMs) is used to enforce guidelines s…

The 2024 Web Almanac was released today, this is an annual "state of the web" report published by the HTTP Archive.

Title: Securing Cloud File Systems with Trusted Execution Authors: Quinn Burke, Yohan Beugin, Blaine Hoak, Rachel King, Eric Pauley, Ryan Sheatsley, Mingli Yu, Ting He, Thomas La Porta, Patrick McDaniel Abstract: Cloud file systems offer organizations a s…

Title: Secure IP Address Allocation at Cloud Scale Authors: Eric Pauley, Kyle Domico, Blaine Hoak, Ryan Sheatsley, Quinn Burke, Yohan Beugin, Engin Kirda, Patrick McDaniel Abstract: Public clouds necessitate dynamic resource allocation and sharing.

Title: ParTEETor: A System for Partial Deployments of TEEs within Tor Authors: Rachel King, Quinn Burke, Yohan Beugin, Blaine Hoak, Kunyang Li, Eric Pauley, Ryan Sheatsley, Patrick McDaniel Abstract: The Tor anonymity network allows users such as political

I have been recognized as a Distinguished Artifact Reviewer at the 33rd USENIX Security Symposium (USENIX Security '24), two years in a row!

This year at PETS'24, I obtained the Andreas Pfitzmann Best Student Paper Award Runner-up for the following paper!

This week, I am in Bristol, UK to attend the 24th Privacy Enhancing Technologies Symposium (PETS'24).

I am excited to be in Switzerland in Lausanne for the EPFL Summer Research Institute (SuRI) 2024.

This is a blog post about my new setup to generate presentations using Markdown files parsed by pandoc into a reveal.js HTML presentation.

Title: A Public and Reproducible Assessment of the Topics API on Real Data Authors: Yohan Beugin and Patrick McDaniel Abstract: The Topics API for the web is Google's privacy-enhancing alternative to replace third-party cookies.

In this blog post, I discuss why I needed to reimplement the Topics API for the web for my research (code here) and explain how the classification in Chrome is actually performed by presenting all pre- and post-processing steps used by Google.

A non-exhaustive list of different advice and recommendations about online security and privacy and some tips if you are using Mozilla Firefox.

The source code of our privacy and utility analysis of the Topics API for the Web (to appear at PETS 2024) obtained the Reproduced (and Available) Artifact Badge!

Here is the work of 2 M.S. students I mentored during our last months at Penn State: Systematic Evaluation of Geolocation Privacy Mechanisms Alban Héon, Ryan Sheatsley, Quinn Burke, Blaine Hoak, Eric Pauley, Yohan Beugin, Patrick McDaniel [arXiv] Characte…

Title: Interest-disclosing Mechanisms for Advertising are Privacy-Exposing (not Preserving) Authors: Yohan Beugin and Patrick McDaniel Abstract: Today, targeted online advertising relies on unique identifiers assigned to users through third-party cookies-…

I have been recognized as a Distinguished Artifact Reviewer at the 32nd USENIX Security Symposium (USENIX Security '23)!

Title: Interest-disclosing Mechanisms for Advertising are Privacy-Exposing (not Preserving) Authors: Yohan Beugin and Patrick McDaniel Abstract: Today, targeted online advertising relies on unique identifiers assigned to users through third-party cookies-…