According to IIA standards, if nonconformance with the Standards affects the internal audit activity ' s ability to fulfill its professional responsibilities or meet stakeholder expectations, the internal audit activity should disclose the nonconformance and its impact. This is essential for maintaining transparency and accountability, ensuring that all stakeholders are informed of the internal audit ' s effectiveness and areas needing improvement.
IIA Standard 1322 - Disclosure of Nonconformance, which outlines requirements for disclosing the results of quality assurance and improvements, particularly concerning nonconformance.

According to the Institute of Internal Auditors (IIA) standards and guidance, the board of an organization defines the overall responsibilities and expectations of the internal audit activity, including its role in providing consulting services. This oversight aligns with the governance role of the board to ensure that the internal audit activity conforms to the standards and adds value to the organization. The internal audit activity may provide consulting services that are advisory in nature and agreed upon with management, but it is the board that sets the overarching governance framework.
Institute of Internal Auditors (IIA) - International Professional Practices Framework (IPPF)

Internal auditors are most likely to be asked to sign a non-disclosure agreement as a demonstration of due professional care. This helps ensure the confidentiality of information encountered during audits, maintaining integrity and trustworthiness in their professional conduct.
IIA Code of Ethics and standards on confidentiality and professional conduct.

According to IIA guidance, the internal audit activity can participate in and provide consulting services that add value and improve an organization's operations. By assisting the committee and consulting with management on the organization's responses and control activities, the internal audit activity utilizes its expertise in risk management while maintaining its advisory role without compromising its independence or objectivity.
Institute of Internal Auditors (IIA) - International Professional Practices Framework (IPPF)

Using information from an engagement to assist a friend's business violates the IIA Code of Ethics, as it breaches confidentiality and objectivity. Internal auditors must maintain impartiality and not misuse information for personal or external advantage.