What is NIST 800-53?

NIST Special Publication 800-53 provides a catalog of security and privacy controls for federal information systems and organizations. It's a widely adopted framework used to ensure the confidentiality, integrity, and availability of information and systems. It's commonly used as a baseline for organizations to select and implement appropriate security controls based on their risk assessments and applicable compliance requirements. It is often used in conjunction with other frameworks, such as ISO 27001 and SOC 2.