Rintaro Koike is a security researcher at NTT Security (Japan) KK, specialising in threat research and malware analysis. He is also the founder of 'nao_sec', where he leads threat research initiatives. His work focuses on web-based threats and APT campaigns targeting East Asia. He has delivered more than 30 presentations at over ten international conferences, including Virus Bulletin, Botconf, FIRST and AVAR.