Mark Zuckerberg, on his Facebook page said, "We have a responsibility to protect your data, and if we can't then we don't deserve to serve you"
"First, we will investigate all apps that had access to large amounts of information before we changed our platform to dramatically reduce data access in 2014, and we will conduct a full audit of any app with suspicious activity"
"Second, we will restrict developers' data access even further to prevent other kinds of abuse"
"Third, we want to make sure you understand which apps you've allowed to access your data"
"While this specific issue involving Cambridge Analytica should no longer happen with new apps today, that doesn't change what happened in the past", said Mr Zuckerberg
Facebook is facing a major backlash after reports of data of its 50 million users accessed, without permission, by Cambridge Analytica, a political data analytics firm.
Late on Tuesday, WhatsApp co-founder Brian Acton told his followers on Twitter to delete their Facebook accounts for data breach
Cambridge Analytica received user data from Facebook app years ago that purported to be a psychological research tool, the firm was not authorised to access such information
UK's data protection watchdog sought a court warrant to search the London headquarters of Cambridge Analytica, that worked with Donald Trump's election team.
Lawmakers from the United States and the UK have demanded action after reports of the data leak of the Facebook users
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