CloudFlare has claimed to have mitigated the biggest distributed denial-of-service (DDoS) attack in the history of the internet.
Spamhaus, a not-for-profit anti-spam organisation, came to CloudFlare last week for assistance against a large DDoS attack it was experiencing. Switching over to CloudFlare's network on March 19, the attack began with a 10Gbps flood of traffic, ramping up in excess of 100Gbps later that night. It initially took Spamhaus' website down, with the outage independently observed by the Internet Storm Center at the time.
According to CloudFlare, the majority of the attack was traffic sent using a technique called DNS (domain name system) reflection. Under normal circumstances, DNS resolvers wait for a user request, such as a lookup for the IP address for a domain name, then respond accordingly.
Notícia completa no site da ZDnet