Broadly, I am interested in privacy and anonymity in the modern digital world. I'm very interested in how a theoretical approach to problems can help us to understand or grapple with often unanticipated privacy concerns as they appear in practice.
I primarily work on Anonymous Communication and practical privacy technology, and related areas:
- Fingerprinting attacks
- Location Privacy in Mobile Devices
- Information Theory and Statistics
- Path Selection in Tor
- Quantifying Anonymity
- Privacy-Preserving Measurements
- Distributing Trust
- Social and Ethical issues around Privacy and Anonymity
- Category Theory and Programming Language Semantics
- Mathematical Logic
- Ellis Fenske. Optimal lower bounds on the accuracy of path selection fingerprinting attacks by generalized link adversaries in anonymous routing networks. In preparation.
- Travis Mayberry, Ellis Fenske, Dane Brown, Jeremy Martin, Christine Fossaceca, Erik Rye, and Lucas Foppe. Who Tracks the Trackers? Circumventing Apple's Anti-Tracking Alerts in the Find My Network. 20th Workshop on Privacy in the Electronic Society (WPES). November, 2021.
- Ellis Fenske, Akshaya Mani, Aaron Johnson, Micah Sherr. Accountable Private Set Cardinality for Distributed Measurement. ACM Transactions on Privacy and Security (TOPS). Accepted. 2021
- Ellis Fenske, Dane Brown, Jeremy Martin, Travis Mayberry, Peter Ryan, and Erik Rye. Three Years Later: A Study of MAC Address Randomization in Mobile Devices And When It Succeeds. Proceedings on Privacy Enhancing Technologies (PETS). July, 2021.
- Jeremy Martin, Douglas Alpuche, Kristina Bodeman, Lamont Brown, Ellis Fenske, Lucas Foppe, Travis Mayberry, Erik Rye, Brandon Sipes, Sam Teplov. Handoff All Your Privacy – A Review of Apple’s Bluetooth Low Energy Continuity Protocol. Proceedings on Privacy Enhancing Technologies (PETS). July, 2019.
- Ellis Fenske*, Akshaya Mani*, Aaron Johnson, Micah Sherr. Distributed Measurement with Private Set-Union Cardinality. ACM Conference on Computer and Communications Security (CCS), November 2017. (*Co-First Authors)