Half the Internet is Down Today: Probably Why:-

In the world there are billions of people using the internet, but mostly Users of United States reported that top websites are not loading on Friday morning. The affected sites include Amazon, Twitter etc websites.

The situation is developing, but it appears to have something to do with DNS hosts.

Domain Name Servers(DNS) are a core part of the internet's backbone. They translate what you type into your browser-www.google.com, for example-into IP address that computers can understand.

And as it happens, DYN, a major DNS host, is suffering a DDoS attack. DDoS attacks basically mean that hackers are overwhelming their sercers with useless data and repeated load requests, which means that useful data- Twitter IP address can't get through.

Many sites and service use DynDNS as their upstream DNS provider, including Github, Twitter, Sanebox, Reddit. All of these are reportedly experience outages and downtime, either partially or totally.

According to Hacker news and Reports, these sites have been affected:

-DYN
-Twitter
-Etsy
-Github
-Soundcloud
-Spotify
-Heroku
-Pagerduty
-Shopify

It's not immediately obvious who is behind this DDoS attack. However, the fact that the attackers were able to disrupt the DNS provider used by some of the most popular websites tells a lot about their abiliteis.

At the moment, Dyn DNS is still dealing with the attack and its cause remains unknown. Stay tuned for further updates.