An internal audit for ISO 27001 is a systematic and independent review of an organization's information security management system (ISMS) to ensure that it is aligned with the requirements of the ISO 27001 standard. The goal of the internal audit is to evaluate the effectiveness and efficiency of the ISMS and identify any areas for improvement. Internal audits for ISO 27001 are usually conducted by a team of trained professionals within the organization, or by an external firm specializing in ISO 27001 internal audits. Showing the records of an internal audit is mandatory to pass ISO27001 audit.

Yes, an internal audit is a mandatory requirement of the ISO 27001 standard. Internal audits are an essential part of the ISO 27001 certification process, as they help the organization demonstrate that its information security management system (ISMS) is compliant with the standard and is being effectively implemented and maintained.