Why do companies do bad things?

Social media giants mishandle data, banks mis-sell PPI insurance, engineers arrange for cars to cheat emissions tests. Why do companies sometimes do bad things? Evan Davis and guests discuss whether it's by accident or deliberate. Coverage of business wrongdoing often focuses on bad individuals but how far can a company's culture be blamed? Guests: Nick Leeson, the original 'rogue trader' Sara George, Partner, Stephenson Harwood Adrian Furnham, Professor of Psychology, Norwegian Business School.