;Facebook founder and CEO Mark Zuckerberg was humbled on US TV last night as he said sorry for the 'major breach of trust' after 50million members had their personal data harvested without their knowledge.
The billionaire, 33, also announced a crackdown on apps used to hijack details from users after the Cambridge Analytica scandal slashed the social network's value by $50billion (£35m) and his own fortune by $5billion (£3.5m).
Speaking for the first time last night, five days after the data breach emerged, he said: 'This was a major breach of trust and I'm really sorry that this happened. Our responsibility now is to make sure this doesn't happen again'.
And in a contrite message to victims and those planning to delete their profiles he said: 'We have a responsibility to protect your data, and if we can't then we don't deserve to serve you'.
He added: 'We need to make sure there are no other Cambridge Analyticas out there'.
Mr Zuckerberg, who said he was 'uncomfortable' facing the press, admitted he had failed to get to grips with 'adversaries' like the Russians meddling in the 2016 US presidential race using fake Facebook accounts and campaign groups.
He also revealed he is 'sure someone's trying' to meddle with the upcoming US midterm elections.
