Mr. Joong Sup Choi performed the tasks of responding to various cybersecurity threats against the country and companies when he worked at Korea Internet & Security Agency (KISA) in 2000 (as the head of the Hacking Response Team of the KOREA Computer Emergency Response Team Coordination Center (KrCERT/CC) and the Personal Information Inspection Team of the Information Protection Headquarters). In the private sector, he performs as a data protection/personal data protection expert who manages the overall preventive measures and responses to infringement cases as a data protection officer.