Ming-chieh's (Nanika) major areas of expertise include vulnerability research, exploit techniques, malware detection and mobile security. He has 10+ years of experience on vulnerability research on Windows platform and malicious document and exploit. He has discovered numerous Windows system and document application vulnerabilities, such as Microsoft Office, Adobe PDF, and Flash. He frequently presents his researches at security conferences in Asia, including Syscan Singapore/Taipei/Hong Kong 08/10, Hacks in Taiwan 05/06/07/09/10. Ming-chieh is a senior vulnerability researcher with Net-Hack Inc. He and Sung-ting are members of CHROOT security group in Taiwan.