Several popular websites and services are down right now for many users. The affected sites include Twitter, SoundCloud, Spotify, and PayPal among others. The cause appears to be a sweeping outage of DNS provider Dyn — which in turn is under DDoS attack, according to an official blog post.From a TechCrunch report: Other sites experiencing issues include Box, Boston Globe, New York Times, Github, Airbnb, Reddit, Freshbooks, Heroku and Vox Media properties. Users accessing these sites might have more or less success depending on where they’re located, as some European and Asian users seem not to be encountering these issues.Last month, Bruce Schneier warned that someone was learning how to take down the internet. Update: 10/21 14:41 GMT by M :Dyn says that it has resolved the issue and sites should function normally.

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Source: Slashdot – Several Sites Including Twitter, Spotify, PayPal, SoundCloud Suffering Outage — Dyn DNS Under DDoS Attack [Update]