If the assignment is a consulting engagement, the best action for the new internal auditor, who recently transferred from being an accounts payable clerk, is to decline the assignment and ask to be reassigned. This avoids any conflict of interest and maintains objectivity, as the auditor would be evaluating processes for which they were previously responsible, potentially compromising the independence and objectivity required in consulting engagements.
IIA Standards 1120 - Objectivity

In the context of fraud risk management, organizations have the most influence over "Opportunity," which is one of the elements of the fraud triangle (Pressure, Opportunity, Rationalization). Reducing opportunity can be achieved through internal controls, segregation of duties, and active oversight, which are directly manageable by the organization. By limiting the chances for fraud to occur, an organization can significantly mitigate its fraud risk.
Institute of Internal Auditors (IIA) guidance on fraud risk management.

Prior to the commencement of an IT audit, the ability to assess the potential for fraud risk and identifying common types of fraud associated with the engagement is a required competency for internal auditors.
Understanding the specific fraud risks inherent in IT systems and processes is essential for effectively auditing these areas, particularly in detecting and preventing fraud.
IIA's Competency Framework for Internal Auditors

The most appropriate action for an internal auditor who realizes that she has undertaken limited training and professional development is to accept responsibility for her own continuing professional development, develop a professional plan, and discuss it with the CAE. This proactive approach ensures that she meets the ongoing professional development requirements, aligns her training needs with the objectives of the internal audit activity, and maintains the necessary competencies to perform effectively in her role.
Institute of Internal Auditors (IIA) - International Professional Practices Framework (IPPF)

According to the Standards, the risk register should include information about identified risks and how these are being managed. Management's acceptance of inadequate controls for a significant risk such as cybersecurity should be documented as it represents a known risk exposure that the organization has chosen to accept. This helps ensure transparency and informs subsequent audit activities and decisions.
International Standards for the Professional Practice of Internal Auditing, specifically on risk assessment and management.