Record DDoS pummels site with once-unimaginable 7.3Tbps of junk traffic
Attacker rained down the equivalent of 9,300 full-length HD movies in just 45 seconds. Large-scale attacks designed to bring down Internet services by sending them more traffic than they can process keep getting bigger, with the largest one yet, measured at 7.3 terabits per second, being reported Friday by Internet security and performance provider Cloudflare. The 7.3Tbps attack amounted to 37.4 terabytes of junk traffic that hit the target in just 45 seconds. That's an almost incomprehensible amount of data, equivalent to more than 9,300 full-length HD movies or 7,500 hours of HD streaming content in well under a minute. Indiscriminate target bombing Cloudflare said the attackers “carpet bombed” an average of nearly 22,000 destination ports of a single IP address belonging to the target, identified only as a Cloudflare customer. A total of 34,500 ports were targeted, indicating the thoroughness and well-engineered nature of the attack. The vast majority of the attack was delivered in the form of User Datagram Protocol packets. Legitimate UDP-based transmissions are used in especially time-sensitive communications, such as those for video playback, gaming applications, and DNS lookups. It speeds up communications by not formally establishing a connection before data is transferred. Unlike the more common Transmission Control Protocol, UDP doesn't wait for a connection between two computers to be established through a handshake and doesn't check whether data is properly received by the other party. Instead, it immediately sends data from one machine to another.
