Strengthening password policies and ensuring unique passwords are used within a specified period are key measures in preventing unauthorized access and reducing the risk of fraud. Password management is a critical aspect of IT security and can significantly mitigate the risk of cyber fraud. The other recommendations (Options B, C, and D) address operational issues but do not directly impact fraud prevention as effectively as enhancing password security does.
Reference:
IIA Standard 2110: Governance.
IIA Practice Guide on IT Controls and Cybersecurity.