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Massive DDOS caused outages for Twitter, several other major websites

It has been a rough day for Managed DNS provider Dynamic Network Services, more commonly known as Dyn, and many of their largest clients.  Their engineers have been combating a series of Distributed Denial of Service Attacks, or DDOS, targeted at the infrastructure that runs their popular Managed DNS products.  Dyn reported on their service status page that the attacks began at 11:10 AM UTC, and are primarily affecting the eastern United States.

Just when things seemed to calm down, another round of attacks was launched at 3:52 PM UTC, according to Dyn. The attack has made accessing or greatly the reduced functionality of many of the webs top websites and services including Twitter, Amazon, Spotify. A post over at  Gizmodo lists scores more according to a post over at  As of the time of this writing Dyn’s latest update posted at 10:00 PM UTC shows the following

“Our engineers continue to investigate and mitigate several attacks aimed against the Dyn Managed DNS infrastructure.”

This post was a common theme today their status page. It seems the woes for Dyn and its customers aren’t quite over just yet. The FBI and DHS are investigating this attack, expect more details to emerge in the coming days.

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