TalkTalk CEO talks to @StephenNolan about cyber attack #BBCNolan

Four million customers of the phone and broadband provider Talk Talk MAY have had their personal and banking details stolen after what police say is a significant cyber attack on the company's website. On last night's Question Time Extra Time Stephen spoke to the Chief Executive of Talk Talk Dido Harding. He asked her what happened and got the views of Robert Schifreen, an Internet Security Consultant and former computer hacker