Explanation
Leadership and commitment is a key requirement of ISO/IEC 27001:2022, as it establishes the top management's role and responsibility in establishing, implementing, maintaining, and continually improving the ISMS. Without assessing this aspect, the audit team cannot conclude that the ISMS is effective and conforms to the standard. Therefore, the audit team leader should advise the auditee and audit client that it is not possible to make a positive recommendation at this point, and explain the reason and the implications. The audit team leader should also consult with the certification body and the audit programme manager on the next steps, such as extending the audit duration, conducting a follow-up audit, or issuing a conditional certification, depending on the certification body's policy and the audit client's agreement. References: =
* ISO/IEC 27001:2022, clause 5, Leadership
* PECB Candidate Handbook ISO 27001 Lead Auditor, page 19, Audit Process
* PECB Candidate Handbook ISO 27001 Lead Auditor, page 22, Audit Report
* PECB Candidate Handbook ISO 27001 Lead Auditor, page 23, Audit Conclusion and Recommendation

Explanation:
The correct sequence of activities is:
* Establish the management system
* Plan the audit programme
* Conduct internal audits
* Hold a Management Review
* Engage a Certification Body for stage 1 and stage 2 audits
* Complete any corrective actions
Comprehensive but Short Explanation: = According to the PECB Candidate Handbook - ISO/IEC 27001 Lead Auditor, the steps for achieving certification are as follows1:
* Establish the management system: This involves defining the scope, objectives, policies, procedures, and controls of the ISMS, as well as ensuring the availability of resources and top management commitment.
* Plan the audit programme: This involves defining the audit objectives, criteria, scope, frequency, methods, and responsibilities for conducting internal audits of the ISMS.
* Conduct internal audits: This involves verifying the conformity and effectiveness of the ISMS, as well as identifying any nonconformities or opportunities for improvement.
* Hold a Management Review: This involves reviewing the performance and suitability of the ISMS, as well as deciding on any changes or actions needed to improve it.
* Engage a Certification Body for stage 1 and stage 2 audits: This involves selecting a reputable and accredited certification body to conduct an external audit of the ISMS, consisting of two stages: a documentation review and an on-site assessment.
* Complete any corrective actions: This involves addressing any nonconformities or findings identified by the certification body, and providing evidence of their implementation and effectiveness.
References: = 1: PECB Candidate Handbook - ISO/IEC 27001 Lead Auditor, pages 25-26.

A possible event that can have a disruptive effect on the reliability of information is a threat. A threat is anything that has the potential to harm an asset or its protection, such as a natural disaster, a human error, a malicious attack, etc. A threat can exploit a vulnerability or weakness in an asset or its protection and cause an adverse impact on the confidentiality, integrity or availability of information. ISO/IEC 27001:2022 defines threat as "potential cause of an unwanted incident, which can result in harm to a system or organization" (see clause 3.48). Reference: [CQI & IRCA Certified ISO/IEC 27001:2022 Lead Auditor Training Course], ISO/IEC 27001:2022 Information technology - Security techniques - Information security management systems - Requirements, What is Threat?

The three options that would not be valid audit trails are:
*Collect more evidence on how the organisation manages the Point of Contact (PoC) which monitors vulnerabilities. (Relevant to clause 8.1)
*Collect more evidence on whether terms and definitions are contained in the information security policy.
(Relevant to control 5.32)
*Collect more evidence to determine if ISO 27035 (Information security incident management) is used as internal audit criteria. (Relevant to clause 8.13) These options are not valid audit trails because they are not directly related to the information security incident management process, which is the focus of the audit. The audit trails should be relevant to the objectives, scope, and criteria of the audit, and should provide sufficient and reliable evidence to support the audit findings and conclusions1.
Option E is not valid because the PoC is not a part of the information security incident management process, but rather a role that is responsible for reporting and escalating information security incidents to the appropriate authorities2. The audit trail should focus on how the PoC performs this function, not how the organisation manages the PoC.
Option G is not valid because the terms and definitions are not a part of the information security incident management process, but rather a part of the information security policy, which is a high-level document that defines the organisation's information security objectives, principles, and responsibilities3. The audit trail should focus on how the information security policy is communicated, implemented, and reviewed, not whether it contains terms and definitions.
Option H is not valid because ISO 27035 is not a part of the information security incident management process, but rather a guidance document that provides best practices for managing information security incidents4. The audit trail should focus on how the organisation follows the requirements of ISO/IEC 27001:
2022 for information security incident management, not whether it uses ISO 27035 as an internal audit criteria.
The other options are valid audit trails because they are related to the information security incident management process, and they can provide useful evidence to evaluate the conformity and effectiveness of the process. For example:
*Option A is valid because it relates to control A.5.29, which requires the organisation to establish procedures to isolate and quarantine areas subject to information security incidents, in order to prevent further damage and preserve evidence5. The audit trail should collect evidence on how the organisation implements and tests these procedures, and how they ensure the continuity of information security during disruption.
*Option B is valid because it relates to control A.6.8, which requires the organisation to establish mechanisms for reporting information security events and weaknesses, and to ensure that they are communicated in a timely manner to the appropriate levels within the organisation6. The audit trail should collect evidence on how the organisation defines and uses these mechanisms, and how they monitor and review the reporting process.
*Option C is valid because it relates to clause 7.2, which requires the organisation to provide information security awareness, education, and training to all persons under its control, and to evaluate the effectiveness of these activities7. The audit trail should collect evidence on how the organisation identifies the information security training needs, how they deliver and record the training, and how they measure the learning outcomes and feedback.
*Option D is valid because it relates to control A.5.27, which requires the organisation to learn from information security incidents and to implement corrective actions to prevent recurrence or reduce impact8.
The audit trail should collect evidence on how the organisation analyses and documents the root causes and consequences of information security incidents, how they identify and implement corrective actions, and how they verify the effectiveness of these actions.
*Option F is valid because it relates to control A.5.30, which requires the organisation to establish and maintain a business continuity plan to ensure the availability of information and information processing facilities in the event of a severe information security incident9. The audit trail should collect evidence on how the organisation develops and updates the business continuity plan, how they test and review the plan, and how they communicate and train the relevant personnel on the plan.
References:
1: ISO 19011:2018, 6.2;
2: ISO/IEC 27001:2022, A.6.8.1;
3: ISO/IEC 27001:2022, 5.2;
4: ISO/IEC 27035:2016, Introduction;
5: ISO/IEC 27001:2022, A.5.29;
6: ISO/IEC 27001:2022, A.6.8;
7: ISO/IEC 27001:2022, 7.2;
8: ISO/IEC 27001:2022, A.5.27;
9: ISO/IEC 27001:2022, A.5.30;
10: ISO 19011:2018;
11: ISO/IEC 27001:2022;
12: ISO/IEC 27001:2022;
13: ISO/IEC 27035:2016;
14: ISO/IEC 27001:2022;
15: ISO/IEC 27001:2022;
16: ISO/IEC 27001:2022;
17: ISO/IEC 27001:2022;
18: ISO/IEC 27001:2022