Supplier Shield is Acuna's third-party risk management (TPRM) module. It provides a centralised supplier register with automated risk scoring across three weighted dimensions — dependency (×0.4), penetration (×0.3), and exposure (×0.3) — producing a colour-coded 1–5 score. Features include assessment campaigns with questionnaire distribution and deadline tracking, individual risk profiles with immutable activity logs, a supplier portal for external responses, and lifecycle management with expiry monitoring and CSV bulk import.