Each DDoS attack seem to be larger than the last, and recent advisories from Akamai and Ixia indicate that attackers are stepping up their game. As attackers expand their arsenal of reflection methods to target CLDAP (Connection-less Lightweight Directory Access Protocol) and BIND, expect to see even larger attacks this year.
Reflection attacks abuse legitimate protocols, such as NTP, DNS, and SNMP, to produce significantly large amounts of attack bandwidth.