More than 24 million home routers on the Internet have open DNS proxies that expose ISPs to DNS-based DDoS attacks. In February alone, more than 5.3 million of these routers were used to generate attack traffic. More than 70 percent of total DNS traffic on one provider’s network was associated with DNS amplification. DNS amplification represented nearly 35 percent of the large-scale events covered in 2013 and early 2014. NTP amplification attacks are common as well, according to a report from Incapsula, now part of Imperva.”]