Explore the rapidly growing RISC-V software ecosystem and its impact on device security in this informative conference talk. Delve into the limitations of the current ecosystem, particularly the absence of a fully trusted operating system for RISC-V capable of running on a Trusted Execution Environment (TEE). Learn about the proposed solution of porting Open Portable Trusted Execution Environment (OP-TEE) to RISC-V, designed for maximum compatibility and reuse of existing Trusted Applications (TAs). Discover how the evolution of the TA ecosystem has led to more robust and customized security solutions across various industries, including mobile, automotive, industrial, and IoT. Gain insights into the project's core security focus and its ultimate goal of providing enhanced security at lower costs for RISC-V and Linux-based devices.