Hi, I’m a second year CS PhD student at Cornell Tech working with Vitaly Shmatikov. I’m currently at New York City. My research interest is machine learning security and privacy. I’m currently working on adversarial attacks on language models and embedding models. Previously I have also worked on Zero-Knowledge Proofs.
📝 Publications
NSDI 2024Zombie: Middleboxes that Don’t Snoop, Collin Zhang, Zachary DeStefano, Arasu Arun, Joseph Bonneau, Paul Grubbs, Michael WalfishEMNLP 2024Extracting Prompts by Inverting LLM Outputs, Collin Zhang, John X. Morris, Vitaly Shmatikov
📝 Preprints
- Controlled Generation of Natural Adversarial Documents for Stealthy Retrieval Poisoning, Collin Zhang, Tingwei Zhang, Vitaly Shmatikov
- Soft Prompts Go Hard: Steering Visual Language Models with Hidden Meta-Instructions, Tingwei Zhang, Collin Zhang, John X Morris, Eugene Bagdasaryan, Vitaly Shmatikov
📖 Educations
- 2023.08 - (now), Cornell University, PhD, Computer Science
- 2019.09 - 2023.05, New York University Stern School of Business, BS, Computer Science & Econometrics
- 2016.09 - 2019.06, Nanjing Foreign Language School
👻 Projects
- FastDraw A Fast and Complete Swift Drawing(Handwriting) Library for iOS
🎤 Talks
- Presented Zombie: Middleboxes that Don’t Snoop (Slide) at Cornell Systems Lunch on Sep 22 2023