Welcome to Network Security and Privacy Research Lab, School of Computing, KAIST. 

카이스트 네트워크 보안 및 프라이버시 연구실입니다. 

Advertisement:

• We have multiple positions open: PhD/master students and graduate/undergraduate interns.

• If you are interested, please send me an email with your cv and schedule a call or a meeting.

News:

• (2025/04) New paper on Frontrunning Attacks against Blockchain Fair Ordering Systems has been conditionally accepted to ACM CCS 2025! Congrats Eunchan, Tae Ung, and Hocheol!

• (2025/03) New paper on Users' Privacy Perception with Video Conferencing Tools has been accepted to PETS 2025! Congrats Hobin and Wonho!

• (2025/02) A new master student is joining our group! Welcome Younsoo Kim (KAIST SoC)!

• (2025/01) New paper on Novel Denial-of-Service (DoS) Attacks against Tor Onion Services has been accepted to USENIX Security 2025! Congrats Jinseo and Hobin!

• (2024/12) New undergrad interns are joining our group. Welcome MoonJung Kim (KAIST SoC), Hoang Ngoc Bao Khue (KAIST SoC), Jongkook Han (KAIST SoC)!

• (2024/11) New paper on Fork Sate-Aware Fuzzing for PoW/PoS Blockchains (Forky) has been accepted to ICSE 2025! Congrats Wonhoi and Hocheol (and Muoi and Amin; our former members)!  

• (2024/09) A new undergrad interns are joining our group. Welcome Yeonjong Jeong (KAIST SoC)!

• (2024/09) New paper on DoH Downgrade Attacks and Bypass Strategies has been accepted to CoNEXT 2024! Congrats Jinseo!

• (2024/09) A high-severity security bug we discovered in the Zoom platform has been assigned the CVE ID: CVE-2024-45424, and it earned us a $20,000 bug bounty. Congrats Seungwon and Wonho!

• (2024/08) Our Eunchan Park has received the President's Award (IITP) for outstanding achievements presented at the '2024 Digital Innovation Talent Symposium,' based on our work on frontrunning attacks against fair-ordering blockchain systems.

• (2024/08) New paper on Physical Localization of Uncooperative Cellular Devices has been accepted to MobiCom 2024! 

• (2024/06) Two new undergrad interns are joining our group. Welcome Ahmad Elmoursi (KAIST SoC), Aya Hamane (EPFL CS)!

• (2024/05) Min Suk's work on blockchain technology has been selected as KAIST's Major Achievement in 14 Future Technology Areas. 

• (2023/03) Three new master students are joining our group! Welcome Dongpyeong Seo (KAIST GSIS), Jaewoo Park (KAIST GSIS), and Daehyun Lim (KAIST SoC)!

• (2024/02) Sui Foundation funds our work on secure layer-2 sequencing. Thanks Sui Foundation!

• (2023/12) LG funds our work on blockchain layer-2 security. Thanks LG-KAIST 6G Center!

• (2023/11) Min Suk is serving as a PC at WiSec 2024.

• (2023/09) A new master student is joining our group! Welcome Jinseo Lee (KAIST SoC)!

• (2023/04) Min Suk is serving as a PC at NDSS 2024.

• (2023/03) Min Suk is appointed as Kwon Oh-Hyun Endowed Assistant Professor for three-year term. 

• (2023/03) Three new master students are joining our group! Welcome Eunchan Park (KAIST GSIS), Taeung Yoon (KAIST GSIS), and Donghyeok Kim (KAIST SoC)!

• (2023/02) Min Suk has been awarded College of Engineering’s Songam Distinguished Research Award. 

• (2023/01) New paper on Sustainability of Bitcoin Partitioning Attacks has been accepted to FC 2023! Congrats Jaehyun and Seungjin!

• (2023/01) Min Suk is serving as a PC at ACM CCS 2023.

• (2023/01) Four new undergraduate interns are joining our group! Welcome Jinseo Lee (KAIST SoC), Jaewon In (SNU CS), Dongpyeong Seo (KAIST SoC), and Byungkyu Kong (KAIST SoC)!

• (2022/12) New paper on Partitioning Ethereum without Eclipsing It has been accepted to NDSS 2023. Congrats to Seungwon Woo and Tae Ung Yoon!

• (2022/12) New paper on Preventing SIM Box Fraud Using Device Fingerprinting has been accepted to NDSS 2023!

• (2022/08) Min Suk will be the founding co-director (along with Prateek Saxena at NUS) of the largest international Blockchain Research Center (BRC) in Asia (news: kor1, kor2, eng1, eng2). Thanks Klaytn Foundation!

• (2022/07) Four new undergrad interns are joining our group. Welcome Taeung Yoon (Yonsei CS), Harin Kim (KAIST SoC), Seungmin Park (KAIST MS), and Amin Jalilov (KAIST SoC)!

• (2022/04) Our alumni Dr. Nitya Lakshmanan will join School of Computing, NUS as a lecturer (teaching faculty member). Congrats Nitya!

• (2022/03) Three new master students are joining our group! Welcome Wonhoi Kim (KAIST GSIS), Jaehyun Ha (KAIST GSIS), and Mintae Kim (KAIST SoC)!

• (2022/02) Muoi has successfully defended his PhD thesis titled "Handling Network Attacks Exploiting Routing Information Asymmetries." Congrats Dr. Muoi Tran!

• (2022/02) Nitya has successfully defended her PhD thesis titled "Risks and Use of Side Channels in Modern Wireless Systems." Congrats Dr. Nitya Lakshmanan!

• (2022/02) Min Suk has been awarded The Soo-Young Lee Teaching Innovation Award (excellent prize).

• (2022/02) Our recent work on Privacy Risk of Watching YouTube over Cellular Networks has been accepted to IMWUT/UbiComp 2022. Congrats to Nitya and Byoungjun!

• (2022/01) Min Suk is serving as a PC at ACM CCS 2022 and ACM WiSec 2022. 

• (2022/01) One new undergrad intern is joining our group. Welcome Mintae Kim (Postech ITC)!

• (2021/12) Two new undergrad interns are joining our group. Welcome Seohee Lee (KAIST SoC) and Junhyun Jang (KAIST SoC)!

• (2021/12) Min Suk gave a talk at Department of Information and Communication Engineering at DGIST on Blockchain Security.

• (2021/11) Our recent work on measuring block synchronization in Bitcoin has been accepted to FC 2022. Congrats to Seungjin, Hocheol, Yongwoo, and Muoi!

• (2021/10) Min Suk had an interview with Arirang News In-Depth on Cyber Warfare and Ransomware. 

• (2021/09) We publish our recent findings on weak block synchronization in Bitcoin (Cryptology ePrint Archive: Report 2021/1282).

• (2021/09) Min Suk is giving a talk at CS department at Yonsei University on Blockchain Security.

• (2021/09) A new master student is joining our group. Welcome Hocheol Nam (KAIST GSIS)!

• (2021/07) Our work on Defending against Network-Sybil Attacks in Bitcoin has been presented at The third workshop on Theory and Practice of Blockchains 2021. See the full presentation YouTube by Muoi Tran!

• (2021/07) A new undergrad intern joins our group. Welcome Hobin Kim (KAIST SoC)!

• (2021/04) Min Suk is listed as a Rising Star in the ICT field in Korea. See the interview. 

• (2021/03) Our recent work on Identifying DNS-over-HTTPS (DoH) messages using Machine Learning has been accepted to IEEE EuroS&P 2021. Congrats to Levi and Himanshu!

• (2021/02) Our recent work on Defending against Network-Sybil Attacks in Bitcoin has been accepted to USENIX Security 2021. Congrats to Muoi and Akshaye!

• (2021/02) Min Suk won the NRF Young Researcher Program (2021-2024) on the topic of 5G/6G system side-channel security analysis.

• (2021/02) Three new master students are joining our group. Welcome Byoungjun Choi (KAIST GSIS), Yong Woo Oh (KAIST GSIS), and SeungJin Baek (KAIST SoC)!

• (2021/01) Three new undergrad interns are joining our group. Welcome JunSeoung Choi (KAIST SoC), Wonhoi Kim (KAIST SoC), and Yonatan Gizachew (KAIST EE)!

• (2020/11) Our work is acknowledged in GSMA Mobile Security Hall of Fame and it is referenced CVD-2020-40. Congrats to Nitya!

• (2020/10) Min Suk presented at ISEC 2020 on New Trends in Enterprise Network Security in the Post-COVID Era.

• (2020/09) Our recent work on Location Privacy Attack in Modern Cellular Networks has been accepted to USENIX Security 2021. Congrats to Nitya!

• (2020/09) Min Suk presented at the Graduate School Seminar at UNIST.

• (2020/08) Min Suk is joining School of Computing at KAIST from 26 Aug 2020.

• (2020/06) CoinDesk covers how the latest Bitcoin Core code tries to address our Erebus attack (but fails to fix it completely).

• (2020/06) I will leave NUS and start a new network security & privacy research group at KAIST from August 2020.

• (2020/05) Our Erebus attack (a Bitcoin partitioning attack) was presented at the online IEEE S&P 2020: see a 1-min video or a full video (project website)

• (2020/03) Our recent work on Amplification DDoS defense utilizing programmable switches is accepted for presentation at IEEE NetSoft 2020. Congrats to Khooi!

• (2019/11)  I will be serving as a PC at ACM CCS 2020 and IEEE ICDCS 2020.

• (2019/10)  Muoi Tran (4th-year PhD) has won the 2019 Microsoft Research Asia Fellowship. Congrats to Muoi!

• (2019/10)  Our recent work on DoS against Open vSwitches is accepted for presentation at the Open vSwitch 2019 Fall Conference. Congrats to Levente! paper

• (2019/09)  I was invited to give a talk on DDoS/Bitcoin attacks at KAIST, DGIST, Postech, Korea Univ, Tsinghua Univ. Talk slides can be found here.

• (2019/09)  Our paper on a novel Denial-of-Service attack against Open vSwitches has been accepted to ACM CoNEXT 2019. Congrats to Levente!

• (2019/09)  Institute for Information Industry (III), Taiwan funded our work on 5G security. Thanks III!

• (2019/08)  Our Erebus Bitcoin attack project webpage has been revamped! Please check this out.

• (2019/08)  Muoi Tran (4th-year PhD) receives Dean’s Graduate Research Excellence Award. Congrats to Muoi!

• (2019/07)  I was invited to give a talk on Bitcoin and 5G attacks at III, Taiwan.

• (2019/07)  Our paper on a Stealthy Partitioning Attack against Bitcoin has been accepted to IEEE S&P 2020. Congrats to Muoi, Inho, Gi Jun, Viet-Anh! paper

• (2019/05)  Muoi Tran (3rd-year PhD) has been awarded President’s Graduate Fellowship (PGF). Congrats to Muoi!

• (2019/03)  Our paper on Verifiable In-network Filtering for DDoS Defense has been accepted to IEEE ICDCS 2019. Congrats to Deli and Muoi!

• (2019/03)  Our paper on Detecting Surveillance Camera Looping Attacks via Wi-Fi has been accepted to ACM WiSec 2019. Congrats to Nitya!

• (2018/12)  Our paper on Transit-link DDoS Attacks and Defenses has been accepted to IEEE S&P 2019. Congrats to Muoi! (Link to the paper)