According to ISO 27001:2022 clause 8.1.4, the organisation shall ensure that externally provided processes, products or services that are relevant to the information security management system are controlled. This includes implementing appropriate contractual requirements related to information security with external providers, such as customers who send ICT equipment for reclamation12 In this case, ABC is a residential nursing home that provides healthcare services to its residents and collects their personal data and their family members' personal data. ABC has a signed service agreement with the residents' family members that states that the collected personal data will not be used for marketing or any other purposes than nursing and medical care. However, ABC has violated this contractual requirement by sharing the personal data with WeCare, a medical device manufacturer, who has used the data to send promotional advertisements to the residents' family members via email and SMS. This has caused dissatisfaction and complaints from the residents' family members, who have a strong reason to believe that ABC is leaking their personal information to a non-relevant third party.
Therefore, the audit finding is a nonconformity with clause 8.1.4 of ISO 27001:2022, as ABC has failed to control the externally provided processes, products or services that are relevant to the information security management system, and has breached the contractual requirements related to information security with its customers. The fact that ABC has taken corrective actions to stop working with WeCare and to apologise to the customers does not eliminate the nonconformity, but only mitigates its consequences. The nonconformity still needs to be recorded, evaluated, and reviewed for effectiveness and improvement.
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

Explanation:

The correct responsibility with each participant of a second-party audit is:
* Prepares the audit report: Audit Team Leader. The audit team leader is responsible for coordinating the audit activities, communicating with the auditee and the customer, and preparing and delivering the audit report that summarizes the audit findings and conclusions1.
* Prepares audit checklists for use during the audit: Auditor. The auditor is responsible for collecting and verifying objective evidence during the audit, using audit checklists as a tool to guide the audit process and ensure that all relevant aspects of the audit criteria are covered1.
* Supports an auditor and provides feedback on their experience: Auditor in training. The auditor in training is a person who is learning how to perform audits under the supervision of an experienced auditor. The auditor in training supports the auditor by observing and participating in the audit activities, and provides feedback on their experience to improve their skills and competence1.
* Follows-up on audit findings within an agreed timeframe: Auditee. The auditee is the organisation that is being audited by the customer or a third party on behalf of the customer. The auditee is responsible for providing access and cooperation to the auditors, and for following up on the audit findings within an agreed timeframe, by implementing corrective actions or improvement measures as needed1.
* Provides an independent account of the audit but does not participate in the audit: Observer. The observer is a person who accompanies the audit team but does not participate in the audit activities. The observer may be a representative of the customer, a regulatory body, or another interested party. The observer provides an independent account of the audit but does not interfere with or influence the audit process or outcome1.
* Escorts the auditors but does not participate in the audit: Guide. The guide is a person who is appointed by the auditee to assist the audit team during the audit. The guide may escort the auditors to different locations, facilitate access to information and personnel, or provide clarification or explanation as requested by the auditors. The guide does not participate in the audit or influence its results1.

Explanation:
* Review is the third stage of the Plan-Do-Check-Act (PDCA) cycle, which is a four-step model for implementing and improving an information security management system (ISMS) according to ISO
/IEC 27001:202212. Review involves assessing and measuring the performance of the ISMS against the established policies, objectives, and criteria12.
* Assess is the verb that describes the action of reviewing the ISMS. Assess means to evaluate, analyze, or measure something in a systematic and objective manner3. Assessing the ISMS involves collecting and verifying audit evidence, identifying strengths and weaknesses, and determining the degree of conformity or nonconformity12.
* Regular is the adjective that describes the frequency or interval of reviewing the ISMS. Regular means occurring or done at fixed or uniform intervals4. Reviewing the ISMS at regular intervals means conducting internal audits and management reviews periodically, such as annually, quarterly, or monthly, depending on the needs and risks of the organization12.
* Suitability is one of the attributes that describes the quality or outcome of reviewing the ISMS. Suitability means being appropriate or fitting for a particular purpose, person, or situation5. Reviewing the ISMS for suitability means ensuring that it is aligned with the organization's strategic direction, business objectives, and information security requirements12.
References :=
* ISO/IEC 27001:2022 Information technology - Security techniques - Information security management systems - Requirements
* ISO/IEC 27003:2022 Information technology - Security techniques - Information security management systems - Guidance
* Assess | Definition of Assess by Merriam-Webster
* Regular | Definition of Regular by Merriam-Webster
* Suitability | Definition of Suitability by Merriam-Webster

According to ISO 19011:2018, which provides guidelines for auditing management systems, an auditor conducting a certification audit should prepare for an audit by reviewing relevant information about the auditee's context and processes1. This may include reviewing documented information related to the audited management system (such as policies, procedures, manuals), previous audit reports and records (such as findings, nonconformities, corrective actions), relevant legal and regulatory requirements (such as laws, standards), relevant risks and opportunities (such as internal and external issues), relevant performance indicators (such as objectives, targets), etc1. Therefore, an auditor may need work documents such as an audit plan (which defines what will be done during an audit), a sample plan (which defines how many samples will be taken from a population), and a checklist (which helps to ensure that all relevant aspects are covered during an audit)1. However, an auditor does not need work documents such as an organisation's financial statement (which is not directly related to information security management), a career history of the IT manager (which is not relevant to assessing conformity with ISO/IEC 27001:2022), or a list of external providers (which is not necessary for planning an audit)1. References: ISO 19011:2018 - Guidelines for auditing management systems