I am a Postdoctoral Research Associate in the Department of Computer Science at the University of Virginia, working with Prof. Yixin Sun. I received my Ph.D. and B.S. degrees in Computer Science and Engineering from Seoul National University, where I was mentored by Prof. Taekyoung “Ted” Kwon (Seoul National University) and Prof. Taejoong “Tijay” Chung (Viginia Tech).

Research Interests

  • Network Security: I am interested in topics such as, but not limited to, the Domain Name System (DNS), Transport Layer Security (TLS)/Public Key Infrastructure (PKI), and email.
  • Internet Measurement: My research methodology often involves large-scale Internet measurements to gain deeper insights into network systems.

Positions

  • Postdoctoral Research Associate
    Oct 2023 - Present

    University of Virginia, Charlottesville, VA, United States

  • Postdoctoral Researcher
    Apr 2022 - Sep 2023

    Seoul National University, Seoul, South Korea

Education

  • Ph.D., Computer Science and Engineering
    Mar 2016 - Feb 2022

    Seoul National University, Seoul, South Korea

  • B.S., Computer Science and Engineering
    Mar 2011 - Feb 2016

    Seoul National University, Seoul, South Korea

  • Visiting student, Information Technology
    Fall 2014

    Uppsala University, Uppsala, Sweden

Publications

Exploring the Ecosystem of DNS HTTPS Resource Records: An End-to-End Perspective
Hongying Dong, Yizhe Zhang, Hyeonmin Lee, Shumon Huque, and Yixin Sun
In Proceedings of the 2024 ACM Internet Measurement Conference  (IMC '24) Madrid, Spain Nov 2024
PDF Dataset

Mutual TLS in Practice: A Deep Dive into Certificate Configurations and Privacy Issues
Hongying Dong, Yizhe Zhang, Hyeonmin Lee, Kevin Du, Guancheng Tu, and Yixin Sun
In Proceedings of the 2024 ACM Internet Measurement Conference  (IMC '24) Madrid, Spain Nov 2024
PDF Code

DDD: A DNS-based DDoS Defense Scheme Using Puzzles
Hyeonmin Lee, Taehyun Kang, Sukhun Yang, Jinyong Jun, and Taekyoung Kwon
In Proceedings of the 33rd International Conference on Computer Communications and Networks  (ICCCN '24) Big Island, Hawaii, United States Jul 2024
PDF Code

ZTLS: A DNS-based Approach to Zero Round Trip in TLS handshake
Sangwon Lim, Hyeonmin Lee, Hyunsoo Kim, Hyunwoo Lee, and Ted ‘‘Taekyoung’’ Kwon
In Proceedings of the ACM Web Conference 2023  (TheWebConf '23 (formerly WWW)) Austin, United States Apr 2023
PDF Code

Under the Hood of DANE Mismanagement in SMTP
Hyeonmin Lee, Md. Ishtiaq Ashiq, Moritz Müller, Roland van Rijswijk-Deij, Taekyoung ‘‘Ted’’ Kwon, and Taejoong Chung
In Proceedings of the 31st USENIX Security Symposium  (USENIX Security '22) Boston, United States Aug 2022
PDF Dataset

A Longitudinal and Comprehensive Study of the DANE Ecosystem in Email
Hyeonmin Lee, Aniketh Gireesh, Roland van Rijswijk-Deij, Taekyoung ‘‘Ted’’ Kwon, and Taejoong Chung
Poster Session in the 31st USENIX Security Symposium  (USENIX Security '22) Boston, United States Aug 2022

Understanding the DANE Ecosystem in Email: How Is It Deployed and Managed?
Hyeonmin Lee
Ph.D. Thesis  Graduate School of Seoul National University Feb 2022

A Longitudinal and Comprehensive Study of the DANE Ecosystem in Email
Hyeonmin Lee, Aniketh Gireesh, Roland van Rijswijk-Deij, Taekyoung ‘‘Ted’’ Kwon, and Taejoong Chung
In Proceedings of the 29th USENIX Security Symposium  (USENIX Security '20) Boston, United States Aug 2020
PDF Dataset

TwinPeaks: An Approach for Certificateless Public Key Distribution for the Internet and Internet of Things
Eunsang Cho, Jeongnyeo Kim, Minkyung Park, Hyeonmin Lee, Chorom Hamm, Soobin Park, Sungmin Sohn, Minhyeok Kang, Ted ‘‘Taekyoung’’ Kwon
Elsevier Computer Network  (SCI-E) Jul 2020
PDF

Development of Cellular Core Network Enabling Network Function Virtualization
Hyeonmin Lee, Junghwan Song
The 28th Joint Conference on Communication and Information  (JCCI '18) Yeosu, Korea May 2018

Professional Experiences

 
 
 
 
 

Postdoctoral Research Associate

Dept. of Computer Science, University of Virginia (UVA)

Oct 2023 – Present Charlottesville, VA, United States
Supervisor: Yixin Sun
 
 
 
 
 

Postdoctoral Researcher

Dept. of Computer Science and Engineering, Seoul National University (SNU)

Apr 2022 – Sep 2023 Seoul, South Korea
Supervisor: Taekyoung ‘Ted’ Kwon
 
 
 
 
 

Technical Research Personnel

Seoul National University (SNU)

Mar 2019 – Feb 2022 Seoul, South Korea
Technical Research Personnel is a form of military service (a combination of military service with a Ph.D. program) in which the service is fulfilled by carrying out research on technology. While fulfilling the service, I participated in or led several research projects; Please note that I had not been involved in any military-related projects.
 
 
 
 
 

Visiting Student

The Center for Cybersecurity, Rochester Institute of Technology (RIT)

May 2019 – Aug 2019 Rochester, NY, United States
Supervisor: Taejoong ‘Tijay’ Chung
 
 
 
 
 

Research Intern

Network Convergence and Security Lab, Seoul National University (SNU)

Aug 2015 – Feb 2016 Seoul, South Korea
Participated in a project that aims to design a system that reduces the overhead of the TLS handshake by delegating the communication processes among low-power devices.

Research Project Experiences (Selected)

A Study for the Future-oriented DANE-based Web Architecture to Solve Problems in the Current TLS-based Web Ecosystem
Supported by Basic Science Research Program - National Research Foundation of Korea (NRF)
Sep 2022 - Aug 2023
Primary Investigator

Research on Secure DNS and Privacy aware Packet Filtering Technology
Supported by Samsung Electronics
Aug 2022 - Jul 2023
System Designer / Programmer

Abnormal Detection and Forensic Techniques using IoT Network Traffic Analysis
Supported by Korea Institute of Information Security & Cryptology (KIISC)
Mar 2021 - Nov 2021
Project Manager (Lab.) / System Designer / Programmer

Versatile Network System Architecture for Multi-dimensional Diversity
Supported by Institute for Information and Communication Technology Promotion (IITP)
Apr 2016 - Dec 2020
Project Manager (Lab.) / System Designer / Programmer

Patents

Method for Performing Mutual Authentication in Communication using Locator ID Separation Protocol, Apparatus, and System for Performing the Same
Ted ‘‘Taekyoung’’ Kwon, Hyeonmin Lee, Hyunwoo Lee
Registration No. 10-2476081 South Korea Dec 2022

Network System and Method for Performing Message Security Thereof
Ted ‘‘Taekyoung’’ Kwon, Hyunwoo Lee, Myungchul Kwak, Hyeonmin Lee, Junghwan Lim, Yoojung Shin
Registration No. 10-2265611 South Korea Jun 2021

Communication Method Based on Integrated Flat ID and System
Ted ‘‘Taekyoung’’ Kwon, Hyunwoo Lee, Myungchul Kwak, Hyeonmin Lee, Dongjun Lee, Hyunchul Oh
Registration No. 10-2023115 South Korea Sep 2019

Awards & Fellowships

Fall 2018 Seoul National University Alumni Association Scholarship, Kwanak Corporation
Spring 2016 Lecture/Research Scholarship, Seoul National University
Fall 2014 Exchange Student Program at Uppsala University
Fall 2013 Seoul National University Alumni Association Scholarship, Kwanak Corporation
Spring 2011 National Scholarship for Science & Engineering, Korea Student Aid Foundation

Talks & Presentations

Sep 2022 APNIC Blog Online post
Under the Hood of DANE Mismanagement in SMTP
Link

Aug 2022 USENIX Security Boston, United States
Under the Hood of DANE Mismanagement in SMTP
Slides Video

Aug 2020 USENIX Security Online
A Longitudinal and Comprehensive Study of the DANE Ecosystem in Email
Slides Video

Contact