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Multi-CloudIncident Teardowns

Dyn and the Mirai Botnet (Oct 2016): When DNS Took Down Half the Internet

On October 21, 2016, a large share of the US internet seemed to stop working. Twitter, Netflix, Reddit, GitHub, Spotify and dozens of other services became...

Multi-CloudHow-To & Hardening

How to Design Multi-Provider DNS and DDoS Protection for Azure and AWS Workloads

The 2016 Dyn attack proved that DNS can take a healthy application offline. Here is a practical way to design DNS and DDoS protection for workloads running...

Multi-CloudDetection & Response

Detecting DNS DDoS Attacks: Sentinel and GuardDuty Detections

DDoS attacks against DNS and web front ends are noisy, which makes them easy to notice and hard to diagnose quickly. The goal of detection is speed: confirm...

Multi-CloudCIO Briefings

CIO Brief: What the Dyn Outage Taught Us About Single Points of Failure in the Cloud

The short version: In October 2016, an attack on one DNS company, Dyn, made major websites unreachable for hours. The websites were fine. A supplier they...

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