Facebook's woes mounted as it faced a lawsuit alleging privacy violations related to data leaked to a consultancy working on Donald Trump's 2016 campaign.
Facebook chief Mark Zuckerberg apologised to the European Parliament on Tuesday for the "harm" caused by a huge breach of users' data.
Facebook chief Mark Zuckerberg has agreed to meet European Parliament members behind closed-doors to answer questions in the wake of the Cambridge Analytica.
Political consulting group Cambridge Analytica used Russian researchers and shared data with companies linked to Russian intelligence.
Cambridge Analytica, the British marketing analytics firm, announced Wednesday that it was closing and would file for insolvency in Britain and the U.S..
Facebook Inc said on Wednesday that the personal information of up to 87 million users, mostly in the United States.
British regulators on Friday began searching the London offices of Cambridge Analytica (CA).
A public apology by Facebook chief Mark Zuckerberg failed Thursday to quell outrage over the hijacking of personal data from millions of people.
The academic behind the app which harvested data from 50 million Facebook users said Wednesday he was being used as a scapegoat in the row over online privacy.
A Cambridge University academic who harvested data on millions of Facebook users said he has been made a scapegoat.
Britain is investigating whether Facebook did enough to protect data after a political consultancy reportedly accessed information on 50 million Facebook users.