The restaurant business is notoriously tough — even without the many fraud threats. The fact is, when you’re operating on very thin profit margins, you can’t afford to lose a cent to thieves. To protect your business from ill-intentioned employees, customers and vendors, take steps to fortify your restaurant against fraud. Gaps for exploitation Your restaurant may have high transaction volumes but lack the technology linking point-of-sale, inventory and accounting systems. This leaves gaps for fraudsters to exploit. Employees could, for example, provide food and drinks to friends without entering the sales — or ring up only a portion of their friends’ bills. They might issue voids or refunds when there was no original sale and pocket the proceeds. Or they could overcharge customers by, say, charging...