TAG Security brings together security experts in the cloud native community to improve the security of CNCF projects and provide security guidance. In this talk we will present highlights from our recent work including mapping open source tools to specific problems in the software supply chain, and our Security Pals initiative to start self-assessments for CNCF projects. We will discuss our outputs from each of these initiatives, and explore how you can get involved in cloud native security. Participants will learn about the work of TAG Security and how they can participate in these and other initiatives.