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While the ISO/IEC 27001 document gives general requirements for an ISMS and is the auditable standard for Information Security Management Systems, there are a family of supporting documents behind it that provide guidelines for planning, implementing, and maintaining an effective ISMS. Below we’ve listed some of these documents, along with their purpose.

ISO 27000 – Overview and Vocabulary

This document provides an overview of the ISMS standards, an introduction to Information Security Management Systems, and terms and definitions used throughout the other documents.

ISO 27001 –ISMS Requirements

This document contains the formal specifications for an ISMS that must be met in order to achieve ISO/IEC 27001 certification.

ISO 27002 – Guidelines for Information Security Management

ISO 27002 contains guidelines for specific implementation details, specifically for clauses 5 to 15 of ISO 270001. An organization will not be audited based on this document.

ISO 27003 – Guidelines for ISMS Implementation

This document provides guidelines meant to help in implementing, operating, reviewing, and maintaining an ISMS. ISO 27003 focuses on a process-oriented approach to Information Security Management Systems.

ISO 27004 – Guidelines for ISMS Measurement

ISO 27004 provides guidance and advice on using measurements to assess an ISMS.

ISO 27005 – Guidelines for Information Security Risk Management

This document helps organizations deal with the risk management decisions that come with implementing an ISMS.

ISO 27011 – Guidelines for Telecommunications ISMS

ISO 27011 is a sector-specific guide for implementing an ISMS. It focuses on telecommunication companies.

ISO 27799– Guidelines for Health ISMS

ISO 27799 provides guidelines implementing and maintaining an ISMS in health-related organizations.