The macOS Security Compliance Project is an open source effort to provide a programmatic approach to generating security guidance. The configuration settings in this document were derived from National Institute of Standards and Technology (NIST) Special Publication (SP) 800-53, Security and Privacy Controls for Information Systems and Organizations, Revision 5. This is a joint project of federal operational IT Security staff from the National Institute of Standards and Technology (NIST), National Aeronautics and Space Administration (NASA), Defense Information Systems Agency (DISA), and Los Alamos National Laboratory (LANL). This project can be used as a resource to easily create customized security baselines of technical security controls by leveraging a library of atomic actions which are mapped to the compliance requirements defined in NIST SP 800-53 (Rev. 5). It can also be used to develop customized guidance to meet the particular cybersecurity needs of any organization.