Number of Vulnerable NTP Servers Spirals Down

The amount of NTP (Network Time Protocol) servers that could be exploited for massive distributed denial-of-service attacks has decreased to over 17,000 in May, from a total of 432,120 available worldwide in December 2013. Vulnerable NTP servers, normally used for time synchronization, can be employed to amplify a distributed denial-of-service attack (DDoS) because of the...