The IoT botnet behind the some of the largest publicly recorded DDoS attacks is flooding its targets with HTTP traffic in Layer 7 attacks.

An unusual DDoS amplification attack was carried out 10 days ago against many of the Internet’s 13 root name servers, the authoritative servers used to resolve IP addresses. The attacks happened on Nov. 30 and again on Dec. 1, and each time, massive volumes of traffic, peaking at five million queries per second, were fired...