Anonymous hacker group hacked Freedom Hosting II and took down more than 10,000 Tor-based dark websites. Hackers demanded a ransom for 0.1 Bitcoin (just over $100) to return the compromised data to the hosting service. Anonymous hacker claimed to have downloaded 74GB of files and a users database dump of 2.3GB. Data dump also contains backups of website database, most of which are based on popular, free, open source content management systems and forums like WordPress and PHPBB.
Source: https://thehackernews.com/2017/02/dark-web-hosting-hacked.html