Hacking into a bank is another type of crime, data protection legislation or simple fraud/theft will cover those types of crime, whats hard to legislate over for the English judiciary is why folks would want to do things for no clear reward, attempting to assign motives is an area fraught with legal danger so a safer ground is simply to turn such events into stealing or criminal damage labelled crime types, the reality is nothing was lost or stolen but folks where inconvenienced, that then is their real crime, being annoying.