Facebook boss Mark Zuckerberg apologized the data breach that was revealed last week. Mr Zuckerberg took full-page advertisements broadsheet newspapers the UK and US to make his apology the data privacy scandal. Zuckerberg was being criticized being too slow to respond to the news. Personal data on to 50 million users was used a U.S. political consultancy called Cambridge Analytica. This company is accused using the leaked data to benefit Donald Trump's 2016 presidential campaign. Zuckerberg said: "This was a breach trust, and I am sorry.... We're now taking steps to make sure this doesn't happen again." The apology made no mention of Cambridge Analytica.
Mr Zuckerberg acknowledged that Facebook could and should have done more to protect user data and to stop it being exploited. Reports are now circulating that Facebook was warned its data protection was too weak in 2011. Mr Zuckerberg outlined the actions Facebook would take going forward. He said: "We're investigating every single app that had access to large amounts data before we fixed this. We expect there are others. And when we find them, we will ban them and tell everyone affected." The value Facebook has fallen $75 billion this week; Zuckerberg's wealth fell $10 billion. There has also been a surge users abandoning their Facebook pages, online calls to #deletefacebook.