Social networks may have to reveal how they target users with ads

Information commissioner calls for more transparency over how individuals' data is used for political ends

Facebook and Twitter may be forced to reveal detailed information about how and why users were targeted for political advertising, the information commissioner Elizabeth Denham has suggested.

Speaking to the digital, culture, media and sport (DCMS) select committee, which is holding an inquiry into fake news, Denham said that transparency in political campaigning was crucial.