The 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 testimony, the billionaire entrepreneur revealed that his own personal information was among that handed over to the political consultancy Cambridge Analytica, which harvested the data of up to 87 million Facebook users without their permission. The Democratic congresswoman Anna Eshoo, reading questions from her constituents at a hearing of the House energy and commerce committee, asked Zuckerberg whether his data was “included in the data sold to the malicious third parties”. After a brief hesitation, the Facebook CEO replied: “Yes.”(theguardian)…[+]