Overview
Director of Engineering, Emerald Innovations
Research focuses on distributed systems, including content delivery networks, computer networks, and computer and network security.
Research focuses on distributed systems, including content delivery networks, computer networks, and computer and network security.
Current Appointments & Affiliations
Pelham Wilder Distinguished Professor of Computer Science
·
2011 - Present
Computer Science,
Trinity College of Arts & Sciences
Professor of Computer Science
·
2010 - Present
Computer Science,
Trinity College of Arts & Sciences
Professor in the Department of Electrical and Computer Engineering
·
2023 - Present
Electrical and Computer Engineering,
Pratt School of Engineering
Associate of the Duke Initiative for Science & Society
·
2017 - Present
Duke Science & Society,
University Initiatives & Academic Support Units
Recent Publications
Characterizing Anycast Flipping: Prevalence and Impact
Conference Lecture Notes in Computer Science · January 1, 2025 A 2016 study by Wei and Heidemann showed that anycast routing of DNS queries to root name servers is fairly stable, with only 1% of RIPE Atlas vantage points “flipping” back and forth between different root name server sites. Continuing this study longitud ... Full text CiteNo Root Store Left Behind
Conference Hotnets 2023 Proceedings of the 22nd ACM Workshop on Hot Topics in Networks · November 28, 2023 When a root certificate authority (CA) in the Web PKI misbehaves, primary root-store operators such as Mozilla and Google respond by distrusting that CA. However, full distrust is often too broad, so root stores often implement partial distrust of roots, s ... Full text CiteRobust Algorithms for TSP and Steiner Tree
Conference ACM Transactions on Algorithms · March 9, 2023 Robust optimization is a widely studied area in operations research, where the algorithm takes as input a range of values and outputs a single solution that performs well for the entire range. Specifically, a robust algorithm aims to minimize regret, defin ... Full text CiteEducation, Training & Certifications
Massachusetts Institute of Technology ·
1989
Ph.D.