A Checklist providing key steps that parties to supply chain agreements can take to avoid common confidentiality security breaches in the supply chain. This Checklist can be used by parties in supply chain relationships, including those involving strategic alliance partners, vendors, distributors, and resellers, to help implement protective procedures, perform supply chain due diligence, ensure strong contractual protections are in place, institute appropriate operational and security measures, and take appropriate action after the business relationship ends.