Tushar Jois

I’m a fifth-year PhD candidate at Johns Hopkins, studying computer security under my advisor Avi Rubin. My undergraduate degree is in computer science and applied mathematics, and is also from Johns Hopkins. I am a member of the SPAR and ARC labs here. My primary research interests are in systems, software, and network security, with an emphasis on embedded devices. Those interested can peruse my curriculum vitae (CV). My pronouns are he/him.

Outside of the lab, you can find me trying my hand at photography and going on road trips.


Β» I'm helping organize a special session at IEEE EDUCON 2023 on IoT education! (November 2022)
Β» We've put up a fancy website for the Meteor project! (November 2021)
Β» I was awarded the Prof. Joel Dean Excellence in Teaching Award! (May 2021)


πŸ” πŸ” Security & Privacy in Computing, Fall 2022.
🌐 πŸ“‘ Computer Networks, Spring 2022.
🧑 πŸ’™οΈ HEART: Computer Security and Privacy for the Modern World, Fall 2021.


Squint Hard Enough: Evaluating Perceptual Hashing with Machine Learning
Jonathan Prokos, Neil Fendley, Matthew Green, Roei Schuster, Eran Tromer, Tushar Jois, Yinzhi Cao.
USENIX Security Symposium 2023 (USENIX '23)

πŸ“ƒ Proceedings (to appear)
πŸ“„ Preprint

SoK: Cryptographic Confidentiality of Data on Mobile Devices
Maximilian Zinkus, Tushar Jois, Matthew Green.
Privacy Enhancing Technologies Symposium 2022 (PETS '22)

πŸ“ƒ Proceedings
πŸ“„ Preprint
πŸ“± Original report

Meteor: Cryptographically Secure Steganography for Realistic Distributions
Gabriel Kaptchuk, Tushar Jois, Matthew Green, Avi Rubin.
ACM Conference on Computer and Communications Security 2021 (CCS '21)

πŸ“ƒ Proceedings
πŸ“„ Preprint
β˜„οΈ Website & demo

DOVE: A Data-Oblivious Virtual Environment
Hyun Bin Lee, Tushar Jois, Christopher Fletcher, Carl Gunter.
Network and Distributed System Security Symposium 2021 (NDSS '21)

πŸ“ƒ Proceedings
πŸ“„ Preprint (full version)
πŸ•ŠοΈ Code

Press & Media

Β» Interviewed for The Health Beat, alongside Mike Rushanan, on the intersection of security and medicine. (August 2021)
Β» Interviewed for the DevNews Podcast (S3:E2), alongside my fellow author Max Zinkus, on our work about Data Security on Mobile Devices. (January 2021)
Β» Quoted in "How Law Enforcement Gets Around Your Smartphone's Encryption", a WIRED article by Lily Hay Newman, on our work about Data Security on Mobile Devices. (January 2021)

Contact Information

I work most days at the IoT Security Lab, Malone 307. The best way to contact me is through email: jois (at) cs (dot) jhu (dot) edu.