Worked on stabilizing the fleet provisioning workflow in the aws-greengrass/aws-greengrass-lite repository by addressing a critical reliability issue. Focused on embedded systems and security, the developer implemented a targeted bug fix in C that validated the Certificate Signing Request (CSR) object before use, preventing a potential null pointer dereference and subsequent crash during provisioning. This change improved the robustness of the provisioning path, reducing failures and support risk for customers. The solution was scoped to preserve existing behavior while enhancing system stability, and was delivered as a well-documented, low-risk update that maintained code clarity and quality throughout the process.