Papers

12.How To Think About End-To-End Encryption and AI: Training, Processing, Disclosure, and Consent
Mallory Knodel, Andrés Fábrega, Daniella Ferrari, Jacob Leiken, Betty Li Hou, Derek Yen, Sam de Alfaro, Kyunghyun Cho, and Sunoo Park
In submission
[blog post] [blog post 2]

11.Hash-Extended Tweakable Block Ciphers with Applications to Committing AEAD
Andrés Fábrega, Shay Gueron, Thomas Ristenpart
Asiacrypt 2026 (to appear)

10.Random-Access AEAD for Fast Lightweight Online Encryption
Andrés Fábrega, Julia Len, Thomas Ristenpart, Gregory Rubin
Eurocrypt 2026
[code]

9.B-Privacy: Defining and Enforcing Privacy in Weighted Voting
Samuel Breckenridge*, Dani Vilardell*, Andrés Fábrega, Amy Zhao, Patrick McCorry, Rafael Solari, Ari Juels
USENIX Security 2026

8.Mitigating Injection Attacks against Encrypted Applications via View-Based Partitioning
Andrés Fábrega, Samuel Breckenridge, Armin Namavari, Thomas Ristenpart
USENIX Security 2025

7.Voting-Bloc Entropy: A New Metric for DAO Decentralization
Andrés Fábrega, Amy Zhao, Jay Yu, James Austgen, Sarah Allen, Kushal Babel, Mahimna Kelkar, and Ari Juels
USENIX Security 2025

6.Liquefaction: Privately Liquefying Blockchain Assets
James Austgen, Andrés Fábrega, Mahimna Kelkar, Dani Vilardell, Sarah Allen, Kushal Babel, Jay Yu, and Ari Juels
IEEE S&P (Oakland) 2025

5.SoK: Watermarking for AI-Generated Content
Xuandong Zhao, Sam Gunn, Miranda Christ, Jaiden Fairoze, Andrés Fábrega, Nicholas Carlini, Sanjam Garg, Sanghyun Hong, Milad Nasr, Florian Tramer, Somesh Jha, Lei Li, Yu-Xiang Wang, and Dawn Song
IEEE S&P (Oakland) 2025

4.Exploiting Leakage in Password Managers via Injection Attacks
Andrés Fábrega, Armin Namavari, Rachit Agarwal, Ben Nassi, and Thomas Ristenpart
USENIX Security 2024

3.Injection Attacks against End-to-End Encrypted Applications
Andrés Fábrega, Carolina Ortega Pérez, Armin Namavari, Ben Nassi, Rachit Agarwal, and Thomas Ristenpart
IEEE S&P (Oakland) 2024

2.A Systematization of Voter Registration System Security
Jack Cable*, Andrés Fábrega*, Sunoo Park, and Michael Specter
J. Cybersecurity 2023

1.A Fresh Approach to Updatable Symmetric Encryption
Andrés Fabrega, Ueli Maurer, and Marta Mularczyk
ePrint, 2021