This document summarizes a presentation about cloud security and the Cloud Security Alliance (CSA). It discusses that security is a key concern for cloud computing. It introduces the SPI model for security responsibilities in Infrastructure as a Service (IaaS), Platform as a Service (PaaS) and Software as a Service (SaaS). Examples of cloud security risks are provided. The CSA is introduced as a non-profit focused on cloud security best practices. Current corporate members and affiliates are listed, as well as individual members and working groups. The CSA's project roadmap and security guidance document are outlined.