I'm a senior quantitative researcher on the Consumer Insights team at Netflix. I earned a PhD from University of Illinois at Urbana-Champaign. My research helps support algorithmic transparency, privacy protections, and user trust as technologies become ever more present in daily life. I was advised by Prof. Yang Wang.

I enjoy building things. I've built for the web, mobile, and VR. In the past, I did research at Google, Facebook, Airbnb, and Figure Eight (f.k.a. CrowdFlower). I also used to compete in web development competitions. I like running, traveling, sci-fi movies and books, and (almost) all kinds of games.

My published works are novel systems, frameworks, and models around topics of user privacy, data ethics, user trust, and accessibility. My work has been published at CHI, WWW, UbiComp, 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 [22% acceptance rate]


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 [26% acceptance rate]


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 [20% acceptance rate]


8. Designing for Trust: A Behavioral Framework for Sharing Economy Platforms [pdf]
   N.M. Barbosa, E. Sun, J. Antin, P. Parigi | WWW 2020 [19% acceptance rate]


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 [18% acceptance rate]


10. Rehumanized Crowdsourcing: A Labeling Framework Addressing Bias and Ethics in Machine Learning [pdf]
    N.M. Barbosa, M. Chen | CHI 2019 [24% acceptance rate]


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 [23% acceptance rate]


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 [35% acceptance rate]


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