H. Yamauchi, Y. Kanzaki, A. Monden, M. Nakamura, K. Matsumoto, “Software Obfuscation from Cracker’s Viewpoint”, in IASTED International Conference on Advances in Computer Science and Technology (ACST’06), pp. 286-291, 2006. Various kinds of software obfuscation methods have been proposed to protect security-sensitive information involved in software implementations. This paper proposes a cracker-centric approach to give a guideline for employing existing obfuscation methods to disrupt crackers’ actions.