The reliability aspect of information that is in danger when a member of staff denies sending a particular message is integrity. Integrity implies that information is authentic and can be verified as such. If a member of staff denies sending a message, it means that either the message was forged or the sender is lying, both of which violate the integrity of the information. Availability, correctness and confidentiality are not directly affected by this scenario. ISO/IEC 27001:2022 defines integrity as "property of accuracy and completeness" (see clause 3.24). 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 Integrity?

Explanation
Audit evidence should be evaluated against the audit criteria in order to determine audit findings.
* Audit evidence is the information obtained by the auditors during the audit process that is used as a basis for forming an audit opinion or conclusion12. Audit evidence could include records, documents, statements, observations, interviews, or test results12.
* Audit criteria are the set of policies, procedures, standards, regulations, or requirements that are used as a reference against which audit evidence is compared12. Audit criteria could be derived from internal or external sources, such as ISO standards, industry best practices, or legal obligations12.
* Audit findings are the results of a process that evaluates audit evidence and compares it against audit criteria13. Audit findings can show that audit criteria are being met (conformity) or that they are not being met (nonconformity). They can also identify best practices or improvement opportunities13.
References :=
* ISO 19011:2022 Guidelines for auditing management systems
* ISO/IEC 27001:2022 Information technology - Security techniques - Information security management systems - Requirements
* Components of Audit Findings - The Institute of Internal Auditors

Explanation
The following are guidelines to protect your password, except for easy recall use the same password for company and personal accounts; do not share passwords with anyone. Using the same password for company and personal accounts is not a guideline to protect your password, as it increases the risk of compromising your password if one of your accounts is hacked or breached. You should use different and unique passwords for each account, and change them regularly. Sharing passwords with anyone is not a guideline to protect your password, as it reduces the security and accountability of your password. You should keep your password confidential and never disclose it to anyone, even if they claim to be authorized or trustworthy. Don't use the same password for various company system security access is a guideline to protect your password, as it prevents unauthorized access or misuse of your password if one of the systems is compromised or breached.
You should use different and complex passwords for each system, and follow the password policies and standards of the organization. Change a temporary password on first log-on is a guideline to protect your password, as it prevents unauthorized access or misuse of your password if the temporary password is intercepted or leaked. You should change the temporary password to a personal and secure password as soon as possible, and avoid using default or predictable passwords. References: : CQI & IRCA ISO 27001:2022 Lead Auditor Course Handbook, page 43. : [ISO/IEC 27001 LEAD AUDITOR - PECB], page 15.

Explanation
According to ISO 27001:2022 clause 4.1, the organisation shall determine external and internal issues that are relevant to its purpose and that affect its ability to achieve the intended outcome(s) of its information security management system (ISMS)12 External issues are factors outside the organisation that it cannot control, but can influence or adapt to. They include political, economic, social, technological, legal, and environmental factors that may affect the organisation's information security objectives, risks, and opportunities12 Internal issues are factors within the organisation that it can control or change. They include the organisation's structure, culture, values, policies, objectives, strategies, capabilities, resources, processes, activities, relationships, and performance that may affect the organisation's information security management system12 Therefore, the following issues are considered 'internal' in the context of a management system to ISO
27001:2022:
Poor levels of staff competence as a result of cuts in training expenditure: This is an internal issue because it relates to the organisation's capability, resource, and process of developing and maintaining the competence of its personnel involved in the ISMS. The organisation can control or change its training expenditure and its impact on staff competence12 Poor morale as a result of staff holidays being reduced: This is an internal issue because it relates to the organisation's culture, value, and relationship with its employees. The organisation can control or change its staff holiday policy and its impact on staff morale12 Increased absenteeism as a result of poor management: This is an internal issue because it relates to the organisation's performance, structure, and accountability of its management. The organisation can control or change its management practices and its impact on staff absenteeism12 A fall in productivity linked to outdated production equipment: This is an internal issue because it relates to the organisation's capability, resource, and process of ensuring the availability and suitability of its production equipment. The organisation can control or change its equipment maintenance and upgrade and its impact on productivity12 The following issues are considered 'external' in the context of a management system to ISO 27001:2022:
Higher labour costs as a result of an aging population: This is an external issue because it relates to the social and demographic factor that affects the availability and cost of labour in the market. The organisation cannot control or change the aging population, but can influence or adapt to its impact on labour costs12 A rise in interest rates in response to high inflation: This is an external issue because it relates to the economic and monetary factor that affects the cost and availability of capital in the market. The organisation cannot control or change the interest rates or inflation, but can influence or adapt to its impact on capital costs12 A reduction in grants as a result of a change in government policy: This is an external issue because it relates to the political and legal factor that affects the availability and conditions of public funding for the organisation. The organisation cannot control or change the government policy, but can influence or adapt to its impact on grants12 Inability to source raw materials due to government sanctions: This is an external issue because it relates to the political and legal factor that affects the availability and cost of raw materials in the market. The organisation cannot control or change the government sanctions, but can influence or adapt to its impact on raw materials12 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