How an army of vulnerable gadgets took down the web today

SAN FRANCISCO — Multiple waves of online attacks blocked many major websites Friday, at times making it impossible for users on the East Coast to access Twitter, Spotify, Netflix, Amazon, Tumblr, Reddit and other sites.
The cause was a large-scale distributed denial of service attack (DDoS) against New Hampshire-based Internet performance company Dyn. The attacks made it difficult for users to access to many popular sites beginning at 7:10 a.m. ET and continued throughout the day.

https://news.google.com/news/rtc?ncl=dSRH8_vwWcCg5UMG04LicOKxawWYM&authuser=0&topic=h