DDoS prevention appliances are the first line of defense for most service providers and large enterprises around the globe looking to protect themselves from brute-force attacks on network or resource availability, and with the unprecedented number, size, and coverage of DDoS attacks since the floodgates opens in 2008, vendors who build DDoS prevention solutions have seen and continue to see a significant increase in demand. This report covers actuals for 4Q14 and 1Q15.