The revelations that the data of some 87 million Facebook users and their friends may have been misused by the consulting firm that worked on Donald Trump's United States presidential campaign, has been called a game changer in the world of data protection as regulators seek to raise awareness about how to secure information.
Senior lawmakers have "agreed that Mark Zuckerberg should come to clarify issues related to the use of personal data in a meeting with representatives of the European Parliament", the Parliament's leader Antonio Tajani said in a statement.
But the decision to hold the meeting with the European Parliament behind closed doors has angered others.
On Monday, April 30th, Mark Zuckerberg sold 156,967 shares of Facebook stock.
The data which got exposed was highly sensitive and revealed the personal details of Facebook users like their results of psychological tests.
A spokesperson for Facebook told the Guardian newspaper that the company had accepted the "proposal to meet with leaders of the European parliament and appreciate [s] the opportunity for dialogue, to listen to their views and show the steps we are taking to better protect people's privacy".
Yet the question of whether Zuckerberg should explain himself publicly remains a point of contention.
Tajani said that simply showing up to explain himself was already a good move.More news: Wall Street heads south as Trump bashes China and oil prices flare
The Information Commissioner's Office served notice to SCL Elections, Cambridge Analytica's parent, to provide the information it holds on David Carroll, saying failure to do so would be a criminal offence punishable by an unlimited fine.
On Monday, Zuckerberg will also attend a meeting organized by French President Emmanuel Macron aimed at pressuring tech giants to use their global influence for public good.
"Our citizens deserve a full and detailed explanation", he added.
That's even though Facebook has admitted that of the 2.7 million European users who could be affected by the Cambridge Analytica scandal, over one million of them could be in the UK.
The Digital, Culture, Media and Sports Committee said that Alexander Nix had accepted its summons.
"We hope that he will respond positively to our request, but if not the Committee will resolve to issue a formal summons for him to appear when he is next in the United Kingdom".