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Posts

Future Blog Post

less than 1 minute read

Published: January 01, 2199

This post will show up by default. To disable scheduling of future posts, edit config.yml and set future: false.

Blog Post number 4

less than 1 minute read

Published: August 14, 2015

This is a sample blog post. Lorem ipsum I can’t remember the rest of lorem ipsum and don’t have an internet connection right now. Testing testing testing this blog post. Blog posts are cool.

Blog Post number 3

less than 1 minute read

Published: August 14, 2014

This is a sample blog post. Lorem ipsum I can’t remember the rest of lorem ipsum and don’t have an internet connection right now. Testing testing testing this blog post. Blog posts are cool.

Blog Post number 2

less than 1 minute read

Published: August 14, 2013

This is a sample blog post. Lorem ipsum I can’t remember the rest of lorem ipsum and don’t have an internet connection right now. Testing testing testing this blog post. Blog posts are cool.

Blog Post number 1

less than 1 minute read

Published: August 14, 2012

This is a sample blog post. Lorem ipsum I can’t remember the rest of lorem ipsum and don’t have an internet connection right now. Testing testing testing this blog post. Blog posts are cool.

portfolio

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publications

A Comparative Analysis of VM Migrations with Virtual SGX

Published in KIISE Korea Computer Congress (KCC), 2020

가상 SGX를 포함한 VM 마이그레이션 기법의 비교 분석

VM Migration with Secure Enclave for Secure Cloud Computing

Published in KICS Summer Conference (KICS-S), 2020

안전한 클라우드 컴퓨팅 환경을 위한 보안 인클레이브와 VM 마이그레이션

Student Session: Comparative Analysis of Live VM Migration with SGX Enclave

Published in IEEE International Conference on Embedded and Real-Time Computing Systems and Applications (RTCSA), 2020

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Analysis of Platform Attestation Technology Using SGX During VM Migration

Published in KICS Summer Conference (KICS-S), 2020

VM 마이그레이션시 SGX 원격 인증 기술을 활용한 플랫폼 인증 기술 분석

Shared Data Protection Technique with SGX

Published in Workshop on Dependable and Secure Computing (WDSC), 2020

SGX를 활용한 공유데이터 보호기법

Hints for Memory Optimization of Asylo-based SGX Enclave Applications

Published in International Conference on ICT Convergence (ICTC), 2020

Presented in Jeju, South Korea, in October 2020.

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A Comparative Analysis of Secure Privacy-Preserving Machine Learning Systems

Published in KIISE Korea Computer Congress (KCC), 2021

개인정보 보호를 위한 안전한 기계학습 시스템의 비교 분석

Short Paper: On the Claims of Weak Block Synchronization in Bitcoin

Published in Financial Cryptography and Data Security (FC), 2022

We re-evaluates claims that Bitcoin has slow block propagation. We show that block synchronization is actually fast enough, and that previous slow-propagation claims stemmed from bugs and limits in monitoring tools. We finally ask several open-ended questions regarding the technical and ethical issues around monitoring blockchain networks.

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Constructing an Open RAN Test Environment

Published in KIISE Korea Computer Congress (KCC), 2023

Open RAN 구현 실험을 위한 환경 구축

Constructing a 4G/5G Cellular Testbed for End-to-end Voice Calls

Published in KIISC Conference on Information Security and Cryptography Summer (CISC-S), 2023

4G/5G 단대단 음성 통화 테스트베드 환경 구축

Traffic Watermarking on Calls Using a VoIP Gateway

Published in KIISC Conference on Information Security and Cryptography Winter (CISC-W), 2023

VoIP 게이트웨이 사용 통화에서의 트래픽 워터마킹

Open RAN Data-plane Structure for Adaptive Network Function Development

Published in KIISE Korea Computer Congress (KCC), 2024

적응적인 네트워크 기능 개발을 위한 Open RAN 데이터 평면 구조 제안

Open RAN Supply Chain Attack Exploiting xApp E2SM Vulnerability

Published in KIISE Korea Software Congress (KSC), 2024

xApp E2SM 취약점을 이용한 Open RAN상 공급망 공격

Fork State-Aware Differential Fuzzing for Blockchain Consensus Implementations

Published in IEEE/ACM International Conference on Software Engineering (ICSE), 2025

We introduce Forky, a fork state-aware differential fuzzing framework for finding semantic discrepancies in blockchain consensus implementations. We test Forky on Bitcoin and Ethereum, which are the representatives of the two major blockchain consensus algorithm families, PoW and PoS consensus algorithms.

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Modeling Cellular Network Vulnerabilities and Security Patches Using Finite State Machines

Published in KIISC Conference on Information Security and Cryptography Summer (CISC-S), 2025

유한 상태 기계를 활용한 이동통신망 취약점 및 보안 패치 모델링 기법

On Frontrunning Risks in Batch-Order Fair Systems for Blockchains

Published in ACM SIGSAC Conference on Computer and Communications Security (CCS), 2025

We examine frontrunning risks in batch-order fair blockchain systems (like Themis [CCS’23]) and propose the ‘Ambush attack’ that enables frontrunning attacks that remain possible despite fair-ordering guarantees.

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A Comparative Analysis of Cyber Attacks against Satellite Internet

Published in KIISC International Conference on Mobile Internet Security (MobiSec), 2025

On the Security Risks of Memory Adaptation and Augmentation in Data-plane DoS Mitigation

Published in Network and Distributed System Security Symposium (NDSS), 2026

We introduce ‘Heracles attack’ that uncover security risks in adaptive data-plane DoS defenses in programmable switches, and propose a new sketch mechnaism ‘Shield’ to mitigate Heracles attack.

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