Full CV Resume

Work Experience

Microsoft

Principal Security Researcher

Apr 2026 - Present

Building AI-powered security automation for vulnerability discovery, exploit generation, and scalable defenses.

Georgia Institute of Technology

Postdoctoral Fellow — School of Cybersecurity and Privacy

Feb 2025 - Apr 2026

Worked on AI agents and LLM infrastructure for Team Atlanta, which won DARPA’s AI Cyber Challenge (AIxCC).

• Advisor: Prof. Taesoo Kim

Samsung Security Center, Samsung SDS

Senior Engineer — Advanced Penetration Testing Group

Aug 2022 - Dec 2024 (2 years 5 months)

Conducted red team assessments at Samsung Security Center across Samsung affiliates’ products, services, and platforms, spanning enterprise AI systems, consumer devices, physical security systems, and kernel-level security mechanisms.

KAIST

Postdoctoral Researcher

Mar 2022 - Jul 2022 (5 months)

Led systems security research on cellular baseband and cyber-physical systems, resulting in USENIX Security and NDSS publications.

• Advisor: Prof. Yongdae Kim

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Education

KAIST

Ph.D. in Electrical Engineering

Mar 2016 - Feb 2022

Thesis: Improving Large-Scale Vulnerability Analysis of IoT Devices with Heuristics and Binary Code Similarity

• Advisor: Prof. Yongdae Kim

KAIST

M.S. in Electrical Engineering

Mar 2014 - Feb 2016

Thesis: Dissecting VoLTE: Exploiting Free Data Channels and Security Problems

• Advisor: Prof. Yongdae Kim

EURECOM

Visiting Scientist — Software and System Security

Jun 2014 - Jul 2014

• Advisor: Prof. Aurélien Francillon

KAIST

B.S. in Computer Science

Feb 2010 - Feb 2014

• Advisor: Prof. Jongmoon Baik

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Awards & Recognition

Award	Result	Team	Date
DARPA AIxCC	1st Place ($4M)	Team Atlanta	Aug 2025
DEF CON 27 CTF	Finals (12th/16)	KaisHack GoN	Aug 2019
DEF CON 26 CTF	Finals (21st/24)	KaisHack+PLUS+GoN	Aug 2018
WhiteHat Contest	1st Place ($30K)	Old GoatskiN	Nov 2017
HDCON	1st Place ($20K)	maxlen	Nov 2017
Codegate CTF	3rd Place ($5K)	Old GoatskiN	Apr 2017
DEF CON 24 CTF	Finals (5th/15)	KaisHack GoN	Aug 2016
WhiteHat Contest	1st Place ($20K)	Syssec	Nov 2014
DEF CON 22 CTF	Finals (10th/20)	KAIST GoN	Aug 2014
WhiteHat Contest	1st Place ($20K)	KAIST GoN	Oct 2013
HDCON	Silver ($2K)	GoN	Dec 2013
DEF CON 20 CTF	Finals (17th/20)	KAIST GoN	Aug 2012
HDCON	Silver ($2K)	KAIST GoN	Jul 2012
Codegate CTF	3rd Place ($5K)	KAIST GoN	Apr 2012
ISEC CTF	1st Place ($10K)	GoN	Sep 2011