Most restaurants are finally reopening to in-person dining. And while you may now be thinking about luring customers back, hiring enough workers and managing supply-chain shortages, one issue has remained the same: fraud. Restaurants often face fraud threats from employees, customers and vendors. So now isn’t the time to drop your guard. Potential risks 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 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 for...