The responsibility of the board of directors with regard to risk management throughout the organization is to monitor the organization's overall risk activities in relation to its risk appetite and other risk criteria. The board plays a crucial oversight role, ensuring that risk management processes are effectively integrated and aligned with the strategic objectives and risk tolerance of the organization.References: Corporate governance standards and IIA guidance on the role of the board in overseeing organizational risk management activities.

The most effective and appropriate role for the internal audit activity with regard to IT governance is to assess whether governance activities are aligned with the organization's risk appetite and take into consideration emerging risks. This role involves evaluating the adequacy and effectiveness of the organization's IT governance framework, ensuring that IT-related decisions and activities align with strategic objectives and manage IT risks effectively.References: IIA Global Technology Audit Guide (GTAG) on IT Governance

The scenario described involves a violation of the principle of confidentiality as defined in The IIA's Code of Ethics. The internal auditor misused information obtained during the course of an audit (salary data of colleagues) for personal gain (requesting a salary raise). This breaches the ethical principle of confidentiality, which mandates that auditors respect the value and ownership of information they receive and do not disclose information without appropriate authority unless there is a legal or professional obligation to do so.References:
The IIA's Code of Ethics on Confidentiality.

The organizational independence of an internal audit activity is considered impaired if there are scope limitations imposed on internal audits. Such limitations prevent the internal audit activity from fully evaluating and reporting on risk management, control, or governance processes within the organization, thus hindering the ability to perform work freely and objectively. Administrative reporting lines (such as to the CEO), the process of compensation approval, or assurance services provided for previous responsibilities do not inherently impair independence unless they lead to restrictions on audit scope or influence over audit findings.References: IIA Standards and guidance on independence and objectivity.

According to IIA guidance, the internal audit charter is a formal document that defines the internal audit activity's purpose, authority, and responsibility. It establishes the internal audit activity's position within the organization, including the nature of the chief audit executive's functional reporting relationship with the board; authorizes access to records, personnel, and physical properties relevant to the performance of engagements; and defines the scope of internal audit activities. Final approval of the internal audit charter is done by the board, not just senior management. Furthermore, the charter might describe the expectations for communicating the results of the quality assurance and improvement program, which ensures that the internal audit activity continues to operate effectively and efficiently.References: IIA Standard 1000: Purpose, Authority, and Responsibility; and Standard 1300: Quality Assurance and Improvement Program.