http://www.newsweek.com/facebook-fine-billion-hack-data-breach-1145443

The massive data breach that Facebook announced Friday may end up being a costly one for the company.

The company said that it had found a data breach Tuesday and had been investigating the hack since. An estimated 50 million user accounts were impacted by the breach but Facebook was unsure what information was accessed and whether or not it was misused, according to the blog post the company wrote to announce the breach.