What foundational standard should a cybersecurity manager be aware of related to best practices in information security?

The foundational standard that a cybersecurity manager should be aware of regarding best practices in information security is ISO/IEC 27000. This standard provides the essential concepts and principles that form the basis for an information security management system (ISMS). It is part of a broader family of standards developed to ensure the security of information assets within an organization.

ISO/IEC 27000 offers an overview of information security management, including scope, objectives, and the importance of establishing, implementing, maintaining, and continually improving an ISMS. Understanding this foundational standard helps cybersecurity managers implement other related standards in the ISO/IEC 27001 family, which provides specific requirements for establishing an ISMS.

While the other answers may also relate to information security, they emphasize different aspects. For instance, the NIST Cybersecurity Framework is particularly geared toward providing a policy framework for government and private sector organizations in the U.S. ISO 9001 focuses on quality management systems, which, while important, does not directly address information security. Consequently, ISO/IEC 27000 is the most relevant foundational standard recognized in the context of best practices in information security.