ISO 27001 Lead Auditor study guide
ISO 27001 Lead Auditor · Work through your exam, one topic at a time.
The PECB Certified ISO/IEC 27001 Lead Auditor credential is aimed at professionals who plan, lead and report on Information Security Management System (ISMS) audits against ISO/IEC 27001, applying ISO 19011 guidelines and the ISO/IEC 17021-1 certification process. The qualifying exam is the final step of the five-day Lead Auditor training course, which moves from ISMS and ISO/IEC 27001 fundamentals, through audit principles and preparation, on-site audit activities, and audit closure, with the exam held on day 5. The ISO 27001 Lead Auditor study guide has 7 sections and about 2,179 words.
01Fundamental Principles and Concepts of an Information Security Management System (ISMS)
An Information Security Management System (ISMS) is the set of interrelated policies, objectives, processes and controls an organisation uses to preserve the confidentiality, integrity and availability (CIA) of information. Information is treated as an asset whatever its form - paper, database, conversation, cloud service.
322 words, about 2 min02Information Security Management System - ISO/IEC 27001 Requirements
ISO/IEC 27001:2022 states its requirements in Clauses 4–10: 4 Context (internal and external issues, interested parties, ISMS scope), 5 Leadership (policy, roles, responsibilities and authorities), 6 Planning (risk assessment, risk treatment, Statement of Applicability, information security objectives, planning of changes), 7 Support (resources, competence, awareness, communication, documented information), 8 Operation , 9 Performance evaluation (monitoring and measurement, internal audit, management review), 10 Improvement (nonconformity and corrective action, continual improvement). Annex A contains 93 controls in four themes: organisational (37), people (8), physical (14) and technological (34).
308 words, about 2 min03Fundamental Audit Concepts and Principles
An audit is a systematic, independent and documented process for obtaining objective evidence and evaluating it objectively against audit criteria . Core vocabulary: audit criteria (the requirements used as a reference - ISO/IEC 27001, the organisation's own procedures, contracts, regulation); audit evidence (records, statements of fact or other information that are relevant and verifiable); audit findings (results of evaluating evidence against criteria - conformities as well as nonconformities); audit conclusion (outcome after considering all findings).
311 words, about 2 min04Preparing an ISO/IEC 27001 Audit
Preparation begins with audit initiation : confirming objectives, scope and criteria with the audit client, checking feasibility, and agreeing duration, locations and timing. Scope covers organisational units, locations, processes, interfaces and outsourced functions - this is the audit scope, which is not simply a copy of the ISMS scope.
298 words, about 1 min05Conducting an ISO/IEC 27001 Audit
The opening meeting confirms plan, scope, criteria, communication channels and logistics. Evidence comes from three sources used in combination: interviews, observation of activities, and review of documents and records .
311 words, about 2 min06Closing an ISO/IEC 27001 Audit
After evidence is gathered, the audit team meets to consolidate and agree findings and reach audit conclusions . The closing meeting presents findings, conclusions and any recommendations to the auditee and client; the auditee should confirm the factual accuracy of the evidence (not necessarily agree with the grading).
305 words, about 2 min07Managing an ISO/IEC 27001 Audit Programme
An audit programme is the set of arrangements for a set of audits, planned for a specific time frame, directed at a specific purpose. An audit plan covers a single audit.
324 words, about 2 min