In Rakuten Group, the security and safety of the Internet services are guaranteed by the Cyber Security Defense Department (CSDD). CSDD covers all aspects of the System Development Life Cycle (SDLC) and operation security for all the services developed inside Rakuten Group. As a member of CSDD Security Audit Group, you will execute offensive security activities and penetration tests against the wide variety of systems and will be challenged to various projects in different aspect of security whi