Final answer:
A security design review should be performed before a security implementation is applied in order to identify and correct any flaws or weaknesses in the design.
Step-by-step explanation:
A security design review should be performed before a security implementation is applied. This helps to ensure that the design of the security measures is solid and effective before they are implemented. By conducting a security design review prior to implementation, any flaws or weaknesses in the design can be identified and corrected, reducing the risk of vulnerabilities in the final product.