The SA-2 Guideline refers to a set of standards established by the National Institute of Standards and Technology (NIST) to enhance the security of information systems. It focuses on the management of security controls, ensuring that organizations implement effective measures to protect sensitive data from unauthorized access and breaches. This guideline is part of the broader NIST Special Publication 800-53, which provides a comprehensive framework for federal agencies and other organizations to assess and improve their cybersecurity practices. By following the SA-2 Guideline, organizations can better manage their security risks and maintain compliance with federal regulations.