- Big Chunk of the Internet Goes Down After DDoS Attack Hits Major DNS Provider -quote:A DDoS attack on Dyn, a major upstream DNS provider, has shut down a large chunk of the Internet for about two hours, rendering millions of sites inaccessible. On the list of websites users reported as down, we list a few such as Twitter, Reddit, Yelp, Imgur, PayPal, Shopify, Soundcloud, Spotify, GitHub, Heroku,