An engineer at NetAgent Co. Ltd. and technical advisor at Secure Sky
Technology Inc. Known internationally as XSS Ninja, Yosuke is the
author of jjencode and aaencode. He has investigated various security
issues such as those related to character encoding like Unicode causes
and discovered numerous vulnerabilities in various software
applications including Internet Explorer, Mozilla Firefox, etc. He is
also a member of the OWASP Japan chapter Advisory Board.