EU, UK lawmakers ask Facebook's chief to clarify data breach

Photo taken on March 20, 2018 shows the exterior of the office building of Cambridge Analytica in London, Britain. Cambridge Analytica, a British consulting company, was accused of harvesting data of up to 50 million Facebook users without permission and using the data to help politicians including U.S. President Donald Trump and the Brexit campaign. (Xinhua/Stephen Chung)