About Me. I’m a Ph.D. student at the Security Optimization Lab (SOR Lab) in the Department of Electrical and Computer Engineering at Seoul National University, under the guidance of Professor Yunheung Paek. My research focuses on software and system security, with an emphasis on hardware-assisted security solutions and confidential computing. Specifically, I address critical security challenges such as memory safety, isolation, and access control by leveraging advanced hardware features like Arm’s Memory Tagging Extension. I also explore the utilization of trusted execution environments across diverse architectures to enhance security. My work has been accepted to notable computer security journals and conferences, such as ACM CCS and IEEE TIFS.

For collaboration inquiries or more information about my research, please feel free to reach out to me at jsyou@sor.snu.ac.kr.

News

• (2025/05) New paper on byte-level access control on shared memory has been accepted to ACM CCS.

Publications

• BASTAG: Byte-level Access Control on Shared Memory using ARM Memory Tagging Extension (to appear)
  Junseung You, Jiwon Seo, Kyeongryong Lee, Yeongpil Cho, and Yunheung Paek
  ACM SIGSAC Conference on Computer and Communications Security (CCS) 2025

• KVSEV: A Secure In-Memmory Key-Value Store with Secure Encrypted Virtualization
  Junseung You, Kyeongryong Lee, Hyungon Moon, Yeongpil Cho, and Yunheung Paek
  ACM Symposium on Cloud Computing (SoCC) 2023

• ZOMETAG: Zone-based Memory Tagging for Fast, Deterministic Detection of Spatial Memory Violations on ARM
  Jiwon Seo⭑, Junseung You⭑, Donghyun Kwon, Yeongpil Cho, and Yunheung Paek
  IEEE Transactions on Information Forensics and Security (TIFS) 2023
  ⭑ co-first authors

• SFITAG: Efficient Software Fault Isolation with Memory Tagging for ARM Kernel Extensions
  Jiwon Seo, Junseung You, Yungi Cho, Yeongil Cho, Donghyun Kwon, and Yunheung Paek
  ACM Asia Conference on Computer and Communications Security (ASIACCS) 2023

• Enhancing a Lock-and-Key Scheme with MTE to Mitigate Use-After-Frees
  Inyoung Bang, Martin Kayondo, Junseung You, Donghyun Kwon, Yeongpil Cho, and Yunheung Paek
  IEEE Access 2023

• SBGen: A Framework to Efficiently Supply Runtime Information for a Learning-based HIDS for Multiple Virtual Machines
  Jiwon Seo, Inyoung Bang, Junseung You, Yeongil Cho, and Yunheung Paek
  IEEE Access 2020

Services

• EuroSys 2025 Shadow Program Committee