Worked on foundational security planning for the persistency feature in the qorix-group/score repository, focusing on establishing robust documentation and risk mitigation strategies. Developed and delivered the initial security plan, incorporating STRIDE-based threat modeling to identify and address potential vulnerabilities early in the development cycle. Created comprehensive security requirements and linked all planning artifacts to specific commits for traceability and future review. Utilized reStructuredText for documentation, applying skills in project planning and security analysis to ensure alignment with best practices. This work laid the groundwork for a secure persistence implementation, supporting proactive risk management and readiness for subsequent development phases.