

October 17, 2025 @ Cornell Tech
NYC Privacy Day
Hosted by DLI (Digital Life Initiative) and SETS (Security, Trust, and Safety Initiative), NYC Privacy Day 2025 is an informal setting to gather and connect researchers working on data privacy at different institutions in the greater New York City area. The schedule below is organized thematically, and the majority of time will be spent in collaborative group discussion. We have designed the agenda to generate conversation more than to showcase individual research projects, including discussion about works-in-progress, syntheses of existing studies, and/or provocations.
Agenda
Friday, October 17th
Time: 9.30am - 5.00pm
Venue: Cornell Tech Campus, Bloomberg Center, Room 161 (directions below)
9:30am Registration
10:00am Welcome
10:15am Differential Privacy in Practice: Synthetic Data for Education, Surrogate Data for Research
Julia Stoyanovich & Lucas Rosenblatt (New York University)
10:45am In LLMs We Trust? A Contextual Integrity Perspective
Yan Shvartzshnaider (York University)
11:15am Is Privacy Security?
Daniel Susser (Cornell University)
11:45am Privacy Law’s Great Bait-and-Switch
Yafit Lev-Aretz (Baruch College, CUNY)
12:15pm Lunch, Posters, Demos, (optional) Walk to Four Freedoms Park
Valeria Alanis, Andrew Campbell, Daniella Cardenas, Prathamesh Dharangutte, Angelina Gargano, Rameen Mahmood, Collins W. Munyendo, Priyanka Nanayakkara, Andrew Quijano, Hauke Sandhaus, Mo Satt, Satchit Sivakumar, Hal Triedman, Yuyan Wang, Leah Woldemariam, Seref Yarar, and Sebastian Zimmeck
2:00pm Lightning talks
Chengyuan Deng, Miguel Fuentes, Penghui Li, and Collins Munyendo
2:30pm How to Make Yourself Less Valuable to Big Tech
3:00pm When LLMs Lie About Themselves
Andrew Miller (Brooklyn Law School)
3:30pm How 404 Media Reveals Privacy Abuses
4:00pm Lightning talks
Saeyoung Rho, Cecilia Ferrando, and Shidong Pan
4:15pm Vote for Best Poster/Demo
4:30pm Best Poster/Demo Award & Wrap-up
5:00pm End
Logistics
Getting to Cornell Tech's Bloomberg Center
Below is a list of multi-modal transportation possibilities for getting to the Bloomberg Center at Cornell Tech (2 West Loop Road).
F-Train to Roosevelt Island Station
-
Catching the F-Train to Roosevelt Island is certainly the quickest and most efficient way to venture to Cornell Tech.
-
Once you ascend to the street level, walk south under the bridge for 5-mins until you see the Bloomberg Center.
Cab/Lyft
-
Even though your ultimate destination will be 2 West Loop Road, when catching a cab or Lyft, we recommend you enter/use this address: 1 East Loop Rd, New York, NY 10044.
-
Given that vehicular access to Roosevelt Island is only from Queens, the journey can take up to 55-mins.
-
Once you arrive, walk to the Bloomberg Center.
Whimsical Options
-
There is a fun cable car from NE Manhattan at 59th Street and 2nd Avenue over to the island (with access from the 4,5,6, and N, R, W lines). Only a metro card is needed.
-
For novelty, a ferry service to Roosevelt Island is also available, accessible from Wall Street, Brooklyn Navy Yards, East 34th Street, Astoria, and East 90th Street.
Bloomberg Center Foyer Check-in
-
When arriving inside the Bloomberg Center foyer, kindly check-in at the security desk.
-
Once through the turnstiles, follow the signs to the workshop venue
Event Registration
NYC Privacy Day is free and open to all, but registration is required below. Please note: we have now reached capacity, and all subsequent registrants will be added to the waitlist.
Poster & Demo Submissions
The day will comprise plenary talks and poster/demo sessions. Relevant and high-quality posters and demos will be accepted until space is filled. Only registered participants are eligible to present.
Organizers
Privacy Day
Columbia University (Rachel Cummings), Cornell Tech (Helen Nissenbaum), New York University (Julia Stoyanovich), and Google (Sergei Vassilvitskii).
Cornell Tech Hosts
Helen Nissenbaum, Alexios Mantzarlis, Michael Byrne, Hauke Sandhaus, Rishi Dev Jha, Madiha Z. Choksi, Matt Franchi, Shana Creaney, and Reina Miyake.
More info: rm2263@cornell.edu