A large collection of hacked computers around the world currently serves as a criminal cloud hosting environment for a variety of cybercrime operations. The entire robot network, orbotnet, consisted of thousands of hacked home computers spread across virtually every time zone in the world. The way this so-called fast-flux botnet works is that it automatically updates the DNS records of each site hosted in the Dark Cloud every few minutes, randomly shuffling the Internet address of every site on the network.”]
Source: https://krebsonsecurity.com/2016/05/carding-sites-turn-to-the-dark-cloud/