Facebook shares sink on perfect storm of bad news

The service could help rebuild Facebook's popularity among younger consumers.

Personal information is archived even when users have logged out or don't have Facebook account.

'There are people in Russia whose job is to try to exploit our systems and other internet systems.'

'We didn’t take a broad enough view of our responsibility, and that was a big mistake.'

'Knowing what I know today, clearly we should have done more,' Zuckerberg said.

Facebook already complies with many parts of the law ahead of its implementation in May, says Zuckerberg.

Privacy settings have also been adjusted to make it easier for users to control their personal information.

Facebook shares tumbled 14 percent last week, while the hashtag #DeleteFacebook gained traction online.

The company 'made mistakes, there's more to do, and we need to step up and do it.'

'Over the years, I've made almost every mistake you can imagine.'

Recent changes cut time spent on the site by some 50 million hours per day.

Business or pleasure on this occasion for the social network mastermind?

Facebook on Monday said it will hire more than 1,000 people to thwart deceptive ads crafted to knock elections off course.