"The key trend here is technology based on Complex Event Processing (CEP)," he said. "Customers can set their own parameters for when they want an alarm to go off - numerous events can be tallied and trigger a message quickly for the people who need to know."

Rogue trading has proliferated in recent years (see graphic), with some of the largest incidents being the £4.3 billion loss at Societe Generale in 2008, and UBS' £1.3 billion loss last year. A combination of the right policies and technology is often cited as vital in preventing the problem.