"Yesterday I posted a post mortem on an outage we had Saturday. The outage was caused when we applied an overly aggressive rate limit to traffic on our network while battling a determined DDoS attacker. In the process of writing it I mentioned that we'd seen a 65Gbps DDoS earlier on Saturday. I've received several questions since that all go something like: "65Gbps DDoS!? Who launches such an attack and how do you defend yourself against it?!" So I thought I'd give a bit more detail."