The PCI Data Security Standard is a multifaceted security standard that includes requirements for security management, policies, procedures, network architecture, software design and other critical protective measures. The PCI Data Security Standard is comprised of 12 general requirements designed to: Build and maintain a secure network; Protect cardholder data; Ensure the maintenance of vulnerability management programs; Implement strong access control measures; Regularly monitor and test networks; and Ensure the maintenance of information security policies.