John Abascal

PhD student, Northeastern University

Joined

May 2023

Names

John Abascal (Preferred)

Emails

****@northeastern.edu (Confirmed)

Personal Links

Career & Education History

PhD student

Northeastern University (neu.edu)

2021 – 2026

Undergrad student

Florida State University (fsu.edu)

2017 – 2021

Advisors, Relations & Conflicts

PhD Advisor

Jonathan Ullman

2021 – Present

PhD Advisor

2021 – Present

Expertise

Privacy

2021 – Present

Machine Learning

2017 – Present

Publications

Should We Forget About Certified Unlearning? Evaluating the Pitfalls of Noisy Methods
John Abascal, Eleni Triantafillou, Matthew Jagielski, Nicole Elyse Mitchell, Peter Kairouz
- Submitted to ICLR 2026
- Readers: Everyone
Black-Box Privacy Attacks on Shared Representations in Multitask Learning
John Abascal, Nicolás Berrios, Alina Oprea, Jonathan Ullman, Adam Smith, Matthew Jagielski
- ICLR 2026 Poster
- Readers: Everyone
Phantom: General Trigger Attacks on Retrieval Augmented Language Generation
Harsh Chaudhari, Giorgio Severi, John Abascal, Matthew Jagielski, Christopher A. Choquette-Choo, Milad Nasr, Cristina Nita-Rotaru, Alina Oprea
- Submitted to ICLR 2025
- Readers: Everyone
TMI! Finetuned Models Spill Secrets from Pretraining
John Abascal, Stanley Wu, Alina Oprea, Jonathan Ullman
- AdvML-Frontiers 2023
- Readers: Everyone

Co-Authors