About me
Hello 👋 I’m Hobin, a first-year Ph.D. student at CMU, where I am fortunate to be co-advised by Professor Nicolas Christin and Professor Lujo Bauer. I’m broadly interested in security and privacy challenges in LLM, particularly how these systems affect and interactive with people. I hope to contribute to safe and socially responsible integration of LLMs into society.
Before starting my Ph.D., I was working on network security under the supervision of Professor Min Suk Kang at KAIST.
For anyone who wants to talk about research or any random topic, feel free to reach out 🙌
NEWS
| Aug. 2026 | 🎉 My first Ph.D. paper about understanding users' security and privacy questions to LLMs was accepted to EMNLP 2026. |
| Aug. 2025 | 🥳 I’m excited to begin my Ph.D. journey. Stay tuned for what’s next! |
| Feb. 2025 | 🎓 I earned my Master’s degree from KAIST. |
| Feb. 2025 | 🎉 My first authored paper on usable security and privacy was accepted to PETS 2025. |
| Jan. 2025 | 🎉 Paper on network security was accepted to USENIX Security 2025. |
Publications
2026
- Security and Privacy Prompts in the Wild: What Users Ask LLMs and How LLMs Respond
Hobin Kim*, Xiaoyuan Wu*, Omer Akgul, Lujo Bauer, Nicolas Christin
In EMNLP'26 (*Equal contribution)
[paper]
2025
- Onions Got Puzzled: On the Challenges of Mitigating {Denial-of-Service} Problems in Tor Onion Services
Jinseo Lee, Hobin Kim, Min Suk Kang
In USENIX Security'25 (Honorable Mention)
[paper] - Understanding User Privacy Perceptions in Video Conferencing: Insights from a Feature-Specific User Study
Hobin Kim, Wonho Song, Joseph Seering, Min Suk Kang
In PETS'25
[paper]