PECB ISO 18788 Lead Auditor study materials
PECB ISO 18788 Lead Auditor study resources

PECB ISO 18788 Lead Auditor study plan

PECB ISO 18788 Lead Auditor · Give each week a clear focus.

8 weeks · About 7 hours per week

Week 1

Fundamental principles and concepts of a Security Operations Management System (SOMS) & Security Operations Management Systems (SOMS)

  • Explain how ISO 18788 structures a Security Operations Management System (SOMS) around the plan-do-check-act cycle and map each clause of the standard to the corresponding PDCA stage

  • Distinguish the SOMS from an ISO 9001 quality management system and an ISO 27001 information security management system, naming at least four requirements unique to security operations and human rights risk

  • Define the core vocabulary of the standard in your own words: security operations, client, stakeholder, human rights risk, due diligence, rules for the use of force, and incident

  • Describe the context-of-the-organization and interested-parties requirements and give two realistic examples of internal and external issues that shape a private security provider's SOMS

  • Identify the leadership, policy, and role-and-responsibility requirements and explain how top management accountability is evidenced in a SOMS

Your checkpoint

A one-page PDCA map of ISO 18788 clauses plus a 15-term glossary written in your own words, both self-checked for accuracy against the standard text

Week 2

Security Operations Management Systems (SOMS) & Fundamental principles and concepts of a Security Operations Management System (SOMS)

  • Break down the planning requirements, including risk assessment, risk treatment, human rights due diligence, and legal and other requirements, and sequence them into a logical workflow

  • Interpret the operational planning and control requirements for security service delivery, including screening, training, and performance of security personnel

  • Explain the rules for the use of force and how an organization should document, communicate, and review them

  • Outline the support requirements for competence, awareness, communication, and documented information, and state what evidence each would leave

  • Summarize the performance evaluation and improvement requirements, including monitoring, internal audit, management review, incident investigation, and corrective action

Your checkpoint

A clause-by-clause requirements checklist covering clauses 4 to 10 of ISO 18788, with at least one example of objective evidence noted next to each requirement

Week 3

Fundamental audit concepts and principles

  • Define audit, audit criteria, audit evidence, and audit findings, and explain the difference between an audit and an inspection or a compliance review

  • Apply the audit principles of integrity, fair presentation, due professional care, confidentiality, independence, and an evidence-based approach to three short scenarios

  • Distinguish first-party, second-party, and third-party audits and describe the role of the lead auditor, the audit team, the client, and the auditee

  • Explain the risk-based approach to auditing and identify how audit programme risk and audit risk differ

  • Classify a nonconformity as major or minor and justify the classification using the impact on the management system and on security service delivery

Your checkpoint

A written analysis of five short audit scenarios that names the principle or concept at stake and states the correct auditor response in each

Week 4

Preparation of an ISO 18788 audit

  • Apply the standard's guidance on initiating an audit, including defining objectives, scope, criteria, and feasibility

  • Draft an audit plan that allocates time by process and by risk, includes sampling rationale, and respects site and shift constraints typical of security operations

  • Prepare a document review list and a set of opening questions for a SOMS covering human rights due diligence and use-of-force controls

  • Write an audit checklist with open questions that probe evidence rather than invite yes or no answers

  • Identify the resources, competences, and access arrangements a lead auditor must confirm before fieldwork begins

Your checkpoint

A complete audit plan and a 40-question evidence-based checklist for a fictional private security provider, including scope, criteria, sampling plan, and schedule

Week 5

Conducting an ISO 18788 audit

  • Conduct a simulated opening meeting that confirms scope, criteria, method, and escalation routes in under 20 minutes

  • Practice evidence collection through interviews, observation, and document sampling, and record the source of each piece of evidence

  • Interview a role-played security site manager and a role-played client representative, probing human rights due diligence and incident handling

  • Write findings that state the requirement, the evidence, and the consequence, and separate nonconformities from observations and opportunities for improvement

  • Handle a disagreement with an auditee about a finding while preserving the evidence-based approach and fair presentation

Your checkpoint

A fieldwork evidence log with at least eight findings written in requirement-evidence-consequence format, each traceable to a checklist question

Week 6

Closing an ISO 18788 audit & Conducting an ISO 18788 audit

  • Prepare and run a closing meeting that presents findings, agrees corrective action timelines, and confirms report distribution and confidentiality

  • Draft an audit report that includes executive summary, scope, criteria, findings, conclusions, and a clear statement of audit limitations

  • Evaluate an auditee's root cause analysis and corrective action plan and identify where it addresses symptoms rather than causes

  • Explain the audit follow-up requirements and how verification of corrective action is planned and recorded

  • Complete the audit by organizing records, closing the audit file, and identifying lessons learned for the audit team

Your checkpoint

A full audit report for the simulated audit, including a closing-meeting agenda and a follow-up verification plan for every nonconformity

Week 7

Managing an ISO 18788 audit programme

  • Design an audit programme for a multi-site security provider, defining objectives, cycle, scope, criteria, and resourcing across a three-year period

  • Apply risk-based scheduling to decide which sites and processes are audited more frequently and justify the choices

  • Establish programme monitoring and review measures, including finding trends, corrective action closure rates, and auditor performance

  • Explain the competence and evaluation requirements for auditors and identify how to maintain and improve auditor competence

  • Address programme-level risks such as auditor independence, resource conflicts, and changes to the organization's context

Your checkpoint

A three-year risk-based audit programme document with a scheduling matrix, monitoring indicators, and an auditor competence and evaluation table

Week 8

Fundamental principles and concepts of a Security Operations Management System (SOMS) & Security Operations Management Systems (SOMS) & Fundamental audit concepts and principles & Preparation of an ISO 18788 audit & Conducting an ISO 18788 audit & Closing an ISO 18788 audit & Managing an ISO 18788 audit programme

  • Revisit the weakest two domains identified from earlier deliverables and rewrite those deliverables to close the gaps

  • Produce a condensed one-page summary of each domain that you can review in the final days before the exam

  • Answer at least 150 practice questions across all domains, recording your score per domain and reviewing every wrong answer

  • Explain aloud, without notes, how an ISO 18788 audit flows from programme planning through closing and follow-up

  • Identify and resolve your remaining knowledge gaps by re-reading the relevant clauses of the standard

Your checkpoint

A domain-by-domain score sheet from practice questions plus seven one-page domain summaries, with a written list of residual gaps and how each was resolved

Milestones

Week 2: Can explain the ISO 18788 clause structure and the planning and operational control requirements without referring to notes, and your requirements checklist is complete for clauses 4 to 10

Week 4: Your audit plan and checklist are finished and peer-reviewed, and you can state the audit principles and nonconformity classification rules accurately

Week 6: You have produced a complete audit report from simulated fieldwork and can defend each finding with traceable evidence

Week 8: You score at least 80 percent on practice questions in every domain, with no domain below 70 percent, and your seven domain summaries are complete