Dongjoo Ha (@ChakYi) is a director of NSHC Pte, ltd. His main job is finding 0-day and he is interested in security threat research and any fun stuff even if that is not related with hacking, security or IT. He has presented at various hacking and security conferences such as Black Hat, DEF CON, CanSecWest, HITCON with his lovely friends. He also enjoys playing Capture The Flag with his awesome friends.
