Why Zuck apologizes for ....????

Facebook chief Mark Zuckerberg has taken out a full page ad in the Washington Post, the New York Times, the Wall Street Journal and six UK papers today to apologize Cambridge Analytica scandal, according to CNN's Brian Stelter.

• The ad starts in bold letters, saying:

"We have a responsibility to protect your information. If we can't, we don't deserve it."

You may have heard about a quiz app built by a university researcher that leaked Facebook data of millions of people in 2014. This was a breach of trust, and I'm sorry we didn't do more at the time. We're now taking steps to make sure this doesn't happen again.

We've already stopped apps like this from getting so much information. Now we're limiting the data apps get when you sign in using Facebook.

We're also investigating every single app that had access to large amounts of data before we fixed this. We expect there are others. And when we find them, we will ban them and tell everyone affected.

Finally, we'll remind you of which apps you've given access to your information — so you can shut off the ones you don't want anymore.

Thank you for believing in this community. I promise to do better for you.

Mark Zuckerberg