Adrià Torralba-Agell
I am a Zero-Knowledge Cryptographer and Blockchain Security Researcher. Most recently, I worked at OpenZeppelin auditing zkVMs, several DeFi protocols, and researching Zero-Knowledge Cryptography and Fully-Homomorphic Encryption. Moreover, I am also a PhD Candidate in Applied Cryptography on Blockchain at the KISON research group (Universitat Oberta de Catalunya).
Session
05-09
16:55
25min
Breaking Rollups: How Sequencer Design Shapes Your L2's Attack Surface
Adrià Torralba-Agell
Layer 2 rollups secure over $40B on Ethereum, yet their sequencer architectures lack systematic security analysis. In this talk, we classify sequencer designs into three patterns: stand-alone, pipeline, and distributed. And we map attack surfaces across each transaction processing stage. Our findings reveal fundamental flaws across all the rollups, as well as, inherent trade-offs.
Core development
Sladkovský Stage