ISO/IEC 27004:2016 provides guidelines intended to assist organizations in evaluating the information security performance and the effectiveness of an information security management system in order to fulfil the requirements of ISO/IEC 27001:2013, 9.1. It establishes:

a) the monitoring and measurement of information security performance;

b) the monitoring and measurement of the effectiveness of an information security management system (ISMS) including its processes and controls;

c) the analysis and evaluation of the results of monitoring and measurement.

ISO/IEC 27004:2016 is applicable to all types and sizes of organizations.