Facebook has apologized for the data that was revealed last week. CEO Mark Zuckerberg took out -page adverts in newspapers in the UK and US. He was being criticized for being too to respond to news of the breach. Data on up to 50 million was used by a of called Cambridge Analytica (CA). CA is accused of using the to benefit Donald Trump's presidential . Zuckerberg said: "This was a breach of trust, and I am ....We're now taking steps to make sure this doesn't happen ." The apology made no mention of CA.
Mr Zuckerberg said Facebook should have done to protect data from being exploited. There are that Facebook was warned about its data protection back in 2011. Mr Zuckerberg outlined the Facebook would now take. He said: "We're investigating every app that had access to large of data...We expect there are . And when we find them, we will ban and tell everyone affected." The of Facebook fell by $75 billion this week. Many users have been abandoning their Facebook , in calls to #deletefacebook.