Twenty percent of the Dark Net was taken offline last week, when a hacker compromised a server hosting some 10,000 websites on the Tor network. Tor, designed to hide the identities of its users, is widely used on the Dark Web, which serves as a hub for illegal online activities. Visitors to the affected pages were greeted with the message, “Hello, Freedom Hosting II, you’ve been hacked.” The attacker reportedly took Freedom Hosting II offline because 50 percent of its sites contained child pornography.