This document describes how Likewise and Microsoft Active Directory can foster compliance with the Payment Card Industry Data Security Standard, a set of requirements for businesses that process payment card information. Developed by Visa, American Express, Discover Financial Services, and other members of the PCI Security Standards Council, the standard sets forth policies, procedures, and practices to protect customer account data. The standard includes specific requirements for strictly controlling access to customer data, authenticating business users, monitoring access, maintaining a secure network, and auditing system resources. Likewise integrates Linux, Unix, and Mac OS X workstations and servers into Active Directory, providing the basis to assign each user a unique ID for authentication, authorization, monitoring, and tracking. Likewise also provides group policies for non-Windows computers so that their security settings and other configurations can be centrally managed in the same way as Windows computers.