So you think you know what fraud looks like, huh? Let's find out by taking this Journal of Accountancy test. Compiled by Joseph Wells, CPA, CFE, founder and chair of the Association of Certified Fraud Examiners, the test includes such questions as:

• Which assets are most often pilfered?
• Which companies are least susceptible to financial statement fraud?
• Which audit steps are used in searching for a ghost employee?

When you're done, check out the ACFE's 2006 "Report to the Nation on Occupational Fraud and Abuse." Key stats: U.S. companies lose about 5 percent of their annual revenues to fraud, for total estimated fraud-related losses of $638 billion.