Security A massive DDOS attack against Dyn DNS is causing havoc online [Update: Resolved] A distributed denial of service (DDoS) attack against DynDNS is causing havoc online, with many major websites reportedly unavailable. According to Dyn DNS, the attack started at 11:10 UTC, and it targeted its managed DNS service. The Domain Name System (DNS) is a tool used to resolve human-readable web addre