Ahmed Yamout enhanced the denoland/chromium_build repository by implementing Arm64 Rust build security features focused on control-flow integrity. He enabled PAC-RET and BTI for AArch64, extending branch-protection mechanisms within the Rust build process. Using his expertise in build system configuration and compiler flags, Ahmed updated the build pipeline to enforce these protections during Rust compilation, addressing mechanism-level exploit risks and aligning with security compliance requirements. His work, tracked for traceability and maintainability, demonstrated a deep understanding of embedded systems and secure build practices. Over the month, Ahmed delivered a targeted feature that strengthened the security posture of the project.