http://www.washingtonpost.com/blogs/the-switch/wp/2018/04/04/facebook-said-the-personal-data-of-most-its-2-billion-users-has-been-collected-and-shared-with-outsiders/

Facebook said Wednesday that most of its 2 billion users likely have had their personal information scraped by outsiders without the users' explicit permission, dramatically raising the stakes in a privacy controversy that has dogged the company for weeks, spurred investigations in the United States and Europe and sent the company's stock price tumbling.

The acknowledgment was part of a broader disclosure by Facebook on Wednesday about the ways in which various levels of user data have been taken by everyone from malicious actors to ordinary app developers.