A stream of binary coding, text or computer processor instructions, is seen displayed on a laptop computer screen as a man works to enter data on the computer keyboard in this arranged photograph in London, U.K., on Wednesday, Dec. 23, 2015. The U.K.s biggest banks fear cyber attacks more than regulation, faltering economic growth and other potential risks, and are concerned that a hack could be so catastrophic that it could lead to a state rescue, according to a survey. Photographer: Chris Ratcliffe/Bloomberg via Getty Images