Oracle PeopleSoft applications include HRMS, FMS, SCM, CRM and CRM. They are widespread in the world (about 50 % of Fortune 100) Some of these systems (especially HRMS) are accessible from the Internet. In this talk, Ill show and describe the main architecture, design decisions, and weak spots. The talk will be shaped as a guide for pentesters: a step-by-step how-to on attacking PeopleSoft.”]