Education

Feb. 2025 - NowPh.D. student, School of Computing, KAIST (Advisor: Sooel Son)
Feb. 2023 - Feb. 2025M.S., School of Computing, KAIST (Advisor: Sooel Son)
Feb. 2018 - Feb. 2023B.S., School of Computing, KAIST

Publications

1. Site Isolation is Dead: How Site Isolation is Broken in Agentic Browsers and Extensions (To appear)
Suyoung Lee, Seongho Keum, Changoo Lee, Dongwon Shin, Sanghyun Hong, Byoungyoung Lee, and Sooel Son. IEEE S&P 2026
[bib]

2. Private Investigator: Extracting Personally Identifiable Information from Large Language Models Using Optimized Prompts
Seongho Keum, Dongwon Shin, Leo Marchyok, Sanghyun Hong, and Sooel Son. USENIX Security 2025
[paper] [bib]

3. TrustyMon: Practical Detection of DOM-based Cross-Site Scripting Attacks Using Trusted Types
Sunnyeo Park, Jihwan Kim, Seongho Keum, Hyunjoon Lee, and Sooel Son. AsiaCCS 2025
[paper] [bib]