Monthly summary for 2026-03 focusing on security policy hardening in qualcomm-linux/meta-qcom. Implemented and delivered a dedicated SELinux domain for tee_supplicant to enforce correct labeling, isolation, and access control within the Qualcomm TEE stack. This work aligns with refpolicy and prepares a backport-ready change set for the Yocto-based meta-selinux workflow. Impact: Strengthened security posture for the TEE path, reducing risk of domain leakage and privilege escalation. Improves maintainability by clarifying policy boundaries and facilitating future audits and cross-repo reviews. Technologies/skills demonstrated: SELinux/refpolicy policy development, backport planning, patch management, cross-repo collaboration, and adherence to Yocto/SELinux governance.