Zuckerberg put on back foot as House grills Facebook CEO over user tracking

In his second day on Capitol Hill, Zuckerberg says his own data was handed to Cambridge AnalyticaFive things we learned from Mark Zuckerberg’s Facebook hearingThe Facebook founder, Mark Zuckerberg, was given a rougher ride on his second day of congressional testimony on Wednesday as he faced sharp questions about the tech giant’s ability to track its users’ movements, shopping habits and browsing histories and was at one stage compared to J Edgar Hoover.During five hours of tes