The terrorist organization ISIS, or the Islamic State, is known to promote its activities by exploiting the open nature of the Internet. This includes recruiting through social networks like Facebook and Twitter, and using sites like YouTube to publish propaganda videos.
They also make use of available web services to guard their sites against cyberattacks and hide their locations.
According to information provided by anti-terrorist hacker group GhostSec, close to 40 pro-ISIS websites are using the services of a Silicon Valley company called CloudFlare. CloudFlare is a content delivery network that provides services to speed up websites and render them virtually immune to distributed denial of service, or DDS, cyberattacks that can overload websites to bring them offline.
Among the sites, 34 are for spreading propaganda, 4 are terrorist forums, and 2 offer technical services. A brief perusal of the sites showed they heap praise on ISIS, promote terrorist attacks, and some are used as chatrooms for extremists.