I'm a senior quantitative researcher on the Consumer Insights team at Netflix. I'm also a co-founder of Flux. I earned a PhD from the University of Illinois at Urbana-Champaign, doing research on algorithmic transparency in AI systems, privacy and security, accessibility, and user trust in emerging technologies. I was advised by Dr. Yang Wang.

I enjoy building things. I've built for the web, mobile, and VR. I was part of research teams Google, Meta, Airbnb, and Figure Eight. I also used to compete in web development competitions. I'm into running, cycling, traveling, sci-fi movies & books, and retro games.

My published works are novel systems, frameworks, and models around topics of user privacy, data ethics & transparency of AI systems, user trust, and accessibility. My work has been published at CHI, WWW, UbiComp, IEEE S&P, USENIX Security, SOUPS, and PETS.

1. GuardLens: Supporting Safer Online Browsing for People with Visual Impairments [pdf]
   S. Kaushik, N.M. Barbosa, Y. Yu, T. Sharma, Z. Kilhoffer, J. Seo, S. Das, Y. Wang | SOUPS 2023


2. When and Why Do People Want Ad Targeting Explanations? Evidence from a Four-Week, Mixed-Methods Field Study [pdf]
   H.P. Lee, J. Logas, S. Yang, Z. Li, N.M. Barbosa, Y. Wang, S. Das | IEEE S&P 2023


3. "Every Website Is A Puzzle!": Facilitating Access to Common Website Features for People with Visual Impairments [pdf]
   N.M. Barbosa, J. Hayes, S. Kaushik, Y. Wang | TACCESS Vol. 15 #3 (2022)


4. DeepPhish: Understanding User Trust Towards Artificially Generated Profiles in Online Social Networks [pdf]
   J. Mink, L. Luo, N.M. Barbosa, O. Figueira, Y. Wang, G. Wang | USENIX Security 2022


5. Who Am I? A Design Probe Exploring Real-Time Transparency about Online and Offline User Profiling Underlying Targeted Ads [pdf]
   N.M. Barbosa, G. Wang, B. Ur, Y. Wang | IMWUT 2021 (UbiComp)


6. WebAlly: Making Visual Task-based CAPTCHAs Transferable for People with Visual Impairments [pdf]
   Z. Zhang, Z. Zhang, H. Yuan, N.M. Barbosa, S. Das, Y. Wang | SOUPS 2021


7. Do Privacy and Security Matter to Everyone? Quantifying and Clustering User-Centric Considerations About Smart Home Device Adoption [pdf]
   N.M. Barbosa, Z. Zhang, Y. Wang | SOUPS 2020


8. Designing for Trust: A Behavioral Framework for Sharing Economy Platforms [pdf]
   N.M. Barbosa, E. Sun, J. Antin, P. Parigi | WWW 2020


9. "What if?" Predicting Individual Users’ Smart Home Privacy Preferences and Their Changes [pdf]
   N.M. Barbosa, J. Park, Y. Yao, Y. Wang | PETS 2019


10. Rehumanized Crowdsourcing: A Labeling Framework Addressing Bias and Ethics in Machine Learning [pdf]
    N.M. Barbosa, M. Chen | CHI 2019


11. UniPass: Design and Evaluation of a Smart Device-Based Password Manager for Visually Impaired Users [pdf]
    N.M. Barbosa, J. Hayes, Y. Wang | UbiComp 2016


12. CAN: Composable Accessibility Infrastructure via Data-Driven Crowdsourcing [pdf]
    Y. Huang, B. Dobreski, B.B. Deo, J. Xin, N.M. Barbosa, Y. Wang, J.P. Bigham | W4A 2015


13. Strategies: An Inclusive Authentication Framework [pdf]
    N.M. Barbosa | ASSETS 2014 [Silver Medal - Undergraduate Student Research Competition]

Patents and patent applications have been created for some of the things I built in graduate school and research internships:

1. Intent-oriented browsing [granted]
   N.M. Barbosa, Y. Wang


2. Framework for adjusting contributor profile in collecting data labels [application]
   N.M. Barbosa, M. Chen, J. Prendki


3. Website authentication using an internet-connected device [granted]
   N.M. Barbosa, Y. Wang