Sebastian Angel

Raj and Neera Singh Assistant Professor

Department of Computer and Information Science

University of Pennsylvania

Levine Hall, Office 604

3330 Walnut Street

Philadelphia, PA 19104


I'm an assistant professor of Computer and Information Science at Penn where I'm part of the Distributed Systems Laboratory, the Security and Privacy Laboratory, and The Warren Center for Network and Data Sciences. I'm the recipient of an NSF CAREER Award, a JPMorgan Faculty Award, the ACM SIGOPS Dennis M. Ritchie Dissertation Award, and the Bert Kay Best Dissertation Award. I was previously a senior researcher at Microsoft Research.

I'm broadly interested in systems, security, privacy, and networking. My work aims to:

Courses (Spring 2024)

Students (see alumni)

Conference Organization

Recent publications (see all)

Reef: Fast Succinct Non-Interactive Zero-Knowledge Regex Proofs

Sebastian Angel, Eleftherios Ioannidis, Elizabeth Margolin, Srinath Setty, and Jess Woods

USENIX Security 2024, Philadelphia, PA, August 2024. [abstract, paper, code]

MuCache: A General Framework for Caching in Microservice Graphs

Haoran Zhang, Konstantinos Kallas, Spyros Pavlatos, Rajeev Alur, Sebastian Angel, and Vincent Liu

NSDI 2024, Santa Clara, CA, April 2024. [abstract, paper, code]

On a Foundation Model for Operating Systems

Divyanshu Saxena, Nihal Sharma, Donghyun Kim, Rohit Dwivedula, Jiayi Chen, Chenxi Yang, Sriram Ravula, Zichao Hu, Aditya Akella, Sebastian Angel, Joydeep Biswas, Swarat Chaudhuri, Isil Dillig, Alex Dimakis, Brighten P Godfrey, Daehyeok Kim, Christopher Rossbach, and Gang Wang

MLSys@NeurIPS, New Orleans, LA, December 2023. [abstract, paper]

Nimble: Rollback Protection for Confidential Cloud Services

Sebastian Angel, Aditya Basu, Weidong Cui, Trent Jaeger, Stella Lau, Srinath Setty, and Sudheesh Singanamalla

OSDI 2023, Boston, MA, July 2023. [abstract, paper, extended report, code]

Flamingo: Multi-Round Single-Server Secure Aggregation with Applications to Private Federated Learning

Yiping Ma, Jess Woods, Sebastian Angel, Antigoni Polychroniadou, and Tal Rabin

S&P 2023, San Francisco, CA, May 2023. [abstract, paper, extended report, code]

Addax: A fast, private, and accountable ad exchange infrastructure

Ke Zhong, Yiping Ma, Yifeng Mao, and Sebastian Angel

NSDI 2023, Boston, MA, April 2023. [abstract, paper, code]

Executing Microservice Applications on Serverless, Correctly

Konstantinos Kallas, Haoran Zhang, Rajeev Alur, Sebastian Angel, and Vincent Liu

POPL 2023, Boston, MA, January 2023. [abstract, paper, code]

Ibex: Privacy-preserving ad conversion tracking and bidding

Ke Zhong, Yiping Ma, and Sebastian Angel

CCS 2022, Los Angeles, CA, November 2022. [abstract, paper, extended report, code]

Efficient Representation of Numerical Optimization Problems for SNARKs

Sebastian Angel, Andrew J. Blumberg, Eleftherios Ioannidis, and Jess Woods

USENIX Security 2022, Boston, MA, August 2022. [abstract, paper, extended report, code]

Incremental Offline/Online PIR

Yiping Ma, Ke Zhong, Tal Rabin, and Sebastian Angel

USENIX Security 2022, Boston, MA, August 2022. [abstract, paper, extended report, code]

Optimizing Data-intensive Systems in Disaggregated Data Centers with TELEPORT

Qizhen Zhang, Xinyi Chen, Sidharth Sankhe, Zhilei Zheng, Ke Zhong,
Sebastian Angel, Ang Chen, Vincent Liu, and Boon Thau Loo

SIGMOD 2022, Philadelphia, PA, June 2022. [abstract, paper]

Rolis: a software approach to efficiently replicating multi-core transactions

Weihai Shen, Ansh Khanna, Sebastian Angel, Siddhartha Sen, and Shuai Mu

EuroSys 2022, Rennes, France, April 2022. [abstract, paper, code]


My lab at Penn has received generous contributions from:

NSF  DARPA  JP Morgan & Chase Co Protocol Labs Ethereum Foundation