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Cat Mai

Hi! I am pursuing a Ph.D. in Computer Science at New York University, advised by Damon McCoy. I am affiliated with Cybersecurity for Democracy, co-founded by my advisor. My research interests are broadly in user privacy and consumer protection. More narrowly, I focus on privacy issues in the online advertisement ecosystem and online shopping.

Past places of research:
Email: cat.mai@nyu.edu
CV | Google Scholar | GitHub | Keybase

* = equal contribution

Most papers here list authors by order of contribution, while some are by alphabetical order.

Peer-reviewed

Caught in a Mafia Romance: How Users Explore Intimate Roleplay and Narrative Exploration with Chatbots
Julia Kieserman, Cat Mai, Sara Lignell, Lucy Qin, Athanasios Andreou, Damon McCoy, Rosanna Bellini
Proceedings of the 2026 CHI Conference on Human Factors in Computing Systems (CHI '26)
[pdf] [doi]

More and Scammier Ads: The Perils of YouTube's Ad Privacy Settings
Cat Mai, Bruno Coelho*, Julia Kieserman*, Lexie Matsumoto*, Kyle Spinelli*, Eric Yang*, Athanasios Andreou, Rachel Greenstadt, Tobias Lauinger, Damon McCoy
Proceedings on Privacy Enhancing Technologies 2025 (PETS '25)
[pdf] [doi] [blog post] [dataset]

Generalization Enhancement Strategies to Enable Cross-Year Cropland Mapping with Convolutional Neural Networks Trained Using Historical Samples
Khallaghi, S., Abedi, R., Abou Ali, H., Alemohammad, H., Dziedzorm Asipunu, M., Alatise, I., Ha, N., Luo, B., Mai, C., Song, L., Wussah, A. O., Xiong, S., Yao, Y.-T., Zhang, Q., & Estes, L. D.
Remote Sensing 2025
[pdf] [doi] [website]

Simple temporal domain adaptation techniques for mapping the inter-annual dynamics of smallholder-dominated croplands over large extents
Estes, L., Khallaghi, S., Abedi, R., Asipunu, M., Ha, N., Luo, B., Mai, C., Wussah, A., Xiong, S., and Yao, Y.-T.
European Geosciences Union General Assembly 2024 (EGU '24)
[pdf] [doi] [website]

#TeamTrees: Investigating How YouTubers Participate in a Social Media Campaign
Shuo Niu, Cat Mai, Katherine G. McKim, and D. Scott McCrickard
Proceedings of the ACM on Human-Computer Interaction (CSCW '21)
[pdf] [doi] [code]

Investigating Drug Addiction Discourse on YouTube
Katherine McKim, Cat Mai, Danielle Hess, Shuo Niu
Companion Publication of the 2021 Conference on Computer Supported Cooperative Work and Social Computing (CSCW '21 Companion)
[pdf] [doi]

#StayHome #WithMe: How Do YouTubers Help With COVID-19 Loneliness?
Shuo Niu, Ava Bartolome*, Cat Mai*, Nguyen B. Ha*
Proceedings of the 2021 CHI Conference on Human Factors in Computing Systems (CHI '21)
[pdf] [doi]

Reports

Why is Home Depot Obsessed With Your Kids?
Stephanie T. Nguyen, Cat Mai, Zachary Harris, Damon McCoy, David Choffnes
March 2026
[pdf available upon request]

Predicting Emotion and Attention from Smartphone Behavioral Data
Dinithi Silva-Sassaman, Cat Mai, Jing Qian, Jeff Huang
Clark Fall Fest '21
[pdf] [website]

Numerical Analysis Report: Tension Spline
Mahdi Boulila, Meherab Hossain, Cat Mai, Daniel Wright
Numerical Analysis class, 2021
[pdf]

How YouTubers Participate in a Social Media Campaign: A Culture-Based Analysis of #TeamTrees
Cat Mai
Clark Winter Fest '21
[pdf]

“Odd One Out”: Model Based Biology in an ESL Classroom
Cat Mai*, Tina Chiem*, Anisha Hassan*
Clark Fall Fest '19
[pdf]

Code

I write research code that serve very specific use cases (read: won't work out of the box and are potentially buggy). Still, I'd like to believe there are parts of it that could be useful to other people.

YouTube video crawler from channel URLs: GitHub
YouTube ad crawler: GitHub

Miscellaneous

In my free time, I boulder, indoor garden, and play Go/weiqi. I also eat a lot of apples. Some varieties 🍎.

If you're applying for PhD programs, one version of my Statement of Purpose and CV at the time. I'm happy to answer questions (to the best of my knowledge).