Comprehensive and Detailed In-Depth Explanation:
* Managerial controls (also called administrative controls) include policies, procedures, and processes to ensure effective security governance. These controls include training, internal audits, security awareness programs, and management reviews. These align with ISO/IEC 27001:2022 Annex A Control A.5.2 (Information Security Roles and Responsibilities) and A.5.3 (Segregation of Duties).
* B. Organizational structure controls relate to segregation of duties and job rotations, making them structural controls rather than purely managerial.
* C. Technical controls involve firewalls, IDSs, and other security mechanisms, which are not managerial but technical measures.

According to ISO 27001:2022 Annex A Control 8.30, the organisation shall ensure that externally provided processes, products or services that are relevant to the information security management system are controlled. This includes developing and entering into licensing agreements that cover code ownership and intellectual property rights, and implementing appropriate contractual requirements related to secure design and coding in accordance with Annex A 8.25 and 8.2912 In this case, the organisation and the developer have performed security tests that failed, which indicates that the secure design and coding requirements of Annex A 8.29 were not met. The IT Manager explains that the encryption and pseudonymization functions failed because they slowed down the system and service performance, and that an extra 150% of resources are needed to cover this. However, this does not justify the acceptance of the test results by the Service Manager, who is not authorised to approve the test according to the software security management procedure. The Service Manager should have consulted with the IT Manager, who is the owner of the process, and followed the procedure for handling nonconformities and corrective actions. The Service Manager's decision to continue the service based on access control alone exposes the organisation to the risk of compromising the confidentiality, integrity, and availability of personal data processed by the mobile app. Therefore, there is a nonconformity (NC) with clause 8.1, control A.8.30.
According to ISO 27001:2022 Clause 8.1, the organisation shall plan, implement and control the processes needed to meet information security requirements, and to implement the actions determined in Clause
6.1. The organisation shall also control planned changes and review the consequences of unintended changes, taking action to mitigate any adverse effects, as necessary12 In this case, the organisation has not controlled the planned change of the mobile app from version 1.0 to version 1.01, which was a minor update provided by the outsourced developer in response to frequent ransomware attacks. The IT Manager explains that the developer performed an emergency release of the updated software, and gave a verbal guarantee that there will be no impact on any security functions.
However, this is not sufficient to ensure that the change is properly assessed, tested, documented, and approved before deployment. The IT Manager should have followed the change management process and procedure, and verified that the updated software meets the security requirements and does not introduce any new vulnerabilities or risks. The IT Manager's reliance on his 20 years of information security experience and the developer's verbal guarantee is not a valid basis for skipping the re-testing of the software. Therefore, there is a nonconformity (NC) with clause 8.1.
References:
1: ISO/IEC 27001:2022 Lead Auditor (Information Security Management Systems) Course by CQI and IRCA Certified Training 1 2: ISO/IEC 27001 Lead Auditor Training Course by PECB 2

According to ISO 19011:2018, which provides guidelines for auditing management systems, clause 6.6 requires the audit team leader to conduct a closing meeting with the auditee's representatives at the end of the audit to present the audit conclusions and any findings1. The closing meeting should also provide an opportunity for the auditee to ask questions, clarify issues, acknowledge the findings, and comment on the audit process1. Therefore, when preparing for the closing meeting, an ISMS auditor should consider the following actions:
* I will advise the auditee that the purpose of the closing meeting is for the audit team to communicate our findings. It is not an opportunity for the auditee to challenge these: This action is appropriate because it reflects the fact that the auditor has followed a systematic and consistent approach to collecting and evaluating audit evidence and reaching audit conclusions. The auditor should advise the auditee that the purpose of the closing meeting is for the audit team to communicate their findings, which are based on objective evidence and professional judgement. The auditor should also explain that it is not an opportunity for the auditee to challenge these findings, as they have already been discussed and confirmed during the audit. However, the auditor should also invite the auditee to ask questions, clarify issues, acknowledge the findings, and comment on the audit process1.
* I will schedule a closing meeting with the auditee's representatives at which the audit conclusions will be presented: This action is appropriate because it reflects the fact that the auditor has followed a planned and agreed audit programme and schedule. The auditor should schedule a closing meeting with the auditee's representatives at which the audit conclusions will be presented, in accordance with clause
6.6 of ISO 19011:20181. The auditor should also ensure that the closing meeting is attended by those responsible for managing or implementing the ISMS, as well as any other relevant parties1.
* I will discuss any follow-up required with my audit team: This action is appropriate because it reflects the fact that the auditor has followed a risk-based approach to determining and reporting any follow-up actions required by the auditee or the certification body. The auditor should discuss any follow-up required with their audit team, such as verifying corrective actions for nonconformities or conducting a subsequent audit1. The auditor should also document any follow-up actions in the audit report1.
* I will review and, as appropriate, approve my teams audit conclusions: This action is appropriate because it reflects the fact that the auditor has followed a rigorous and professional process to reaching and reporting audit conclusions. The auditor should review and, as appropriate, approve their teams audit conclusions, which are based on objective evidence and professional judgement. The auditor should also ensure that their teams audit conclusions are consistent with the audit objectives and scope, and reflect the overall performance and conformity of the ISMS1.

According to the PECB Candidate Handbook for ISO/IEC 27001 Lead Auditor, a correction is an action to eliminate a detected nonconformity, such as rework, repair, or replacement1. The examples of A, B, C, and E are corrections because they fix the errors or defects that caused the nonconformities, such as a missing signature, a missing guide, a wrong date, or a wrong colour code. The other examples (D, F, G, and H) are not corrections, but corrective actions, because they address the root causes of the nonconformities, such as inadequate training, poor planning, ineffective documentation, or unclear responsibility2. References: 1:
PECB Candidate Handbook for ISO/IEC 27001 Lead Auditor, page 35, section 4.5.12: PECB Candidate Handbook for ISO/IEC 27001 Lead Auditor, page 36, section 4.5.2.