Which of the following control methods is effective in reducing the risk of purchasing-scheme fraud?
1. Periodically reviewing the vendor list for unusual vendors and addresses.
2. Segregating duties for amount purchasing, receiving, shipping, and accounting.
3. Validating sequential integrity of purchase orders.
4. Verifying the validity of invoices with post office box addresses.
A computer system automatically locks a user's account after three unsuccessful attempts to log on.
Which type of control does this scenario represent?
An internal auditor for a large retail chain suspects that a store manager has been stealing money from cash sales by listing the sales as accounts receivable and then writing off the accounts as bad debts. Which of the following irregularities is the most likely cause of the auditor's suspicion?
A manufacturing line supervisor joins the internal audit activity for a two-year rotational job assignment and is assigned to an accounts receivable audit. With regard to this assignment, which of the following should be the primary concern of the audit manager?
