In smaller businesses, payroll fraud tends to be a major problem. Ghost employees are created and paid, and a manager or employee usually collects the salary. Some signs of payroll fraud happening include paychecks without taxes, duplicated social security numbers and contact info. This may potentially prevented by randomly requiring ID to receive paycheck and mandating direct deposit. Large businesses often deal with accounts payable fraud. Money flowing from business to vendors, bills, etc. is targeted. About 80 percent of payment fraud is through checks. Publicly traded businesses must content with financial statement fraud where money coming into the business from investors or creditors is targeted.
Source: Accounting School Guide