Following the success of the first edition, this book has been re-released to reflect the ISO/IEC 27001:2022 and ISO/IEC 27002:2022 updates. Ideal for information security managers, auditors, consultants and organisations preparing for ISO 27001:2022 certification, this book will help readers understand the requirements of an ISMS (information security management system) based on ISO 27001:2022. Similarly, for anyone involved in internal or external audits, the book includes the definitive requirements that auditors must address when certifying organisations to ISO 27001:2022. The auditing guidance covers what evidence an auditor should look for to satisfy themselves that the requirement has been met. This guidance is useful for internal auditors and consultants, as well as information security managers and lead implementers as a means of confirming that their implementation and evidence to support it will be sufficient to pass an audit. This guide is intended to be used by those involved in: Designing, implementing and/or maintaining an ISMS; Preparing for ISMS audits and assessments; or Undertaking both internal and third-party ISMS audits and assessments.