HeungSoo (David) Kang HeungSoo Kang is a security engineer working for LINE in Korea. He works with many colleagues in LINE to secure LINE's services and infrastructure. HeungSoo used to work as a malware analyst, a red-team member/security engineer, code (de)obfuscation developer, etc. His interests are reverse engineering, code obfuscation, malware analysis, APT tracking, analysing exploits, and writing tools for these.