Which framework is widely used for managing and improving information security?

The ISO/IEC 27001 standard is widely recognized and utilized as a framework for managing and improving information security. It provides a comprehensive approach to securing sensitive information by establishing, implementing, maintaining, and continually improving an Information Security Management System (ISMS). This framework encompasses a risk management process that identifies and mitigates information security risks, ensuring that organizations can protect their valuable data assets effectively.

ISO/IEC 27001 emphasizes the importance of systematic management and continual improvement, guiding organizations through setting security objectives, conducting risk assessments, and maintaining compliance with legal and regulatory requirements. This makes it particularly suitable for organizations seeking to establish a solid foundation for their information security practices.

While the other frameworks mentioned may touch upon aspects of information security, ISO/IEC 27001 specifically focuses on a broad and established methodology for addressing and improving information security management, making it the most applicable choice for the context of the question.