Cloudflare blocks largest recorded DDoS attack peaking at 3.8Tbps

During a distributed denial-of-service campaign targeting organizations in the financial services, internet, and telecommunications sectors, volumetric attacks peaked at 3.8 terabits per second, the largest publicly recorded to date. The assault consisted of a “month-long” barrage of more than 100 hyper-volumetric DDoS attacks flooding the network infrastructure with garbage data.

The researchers say that the network of malicious devices used mainly the User Datagram Protocol (UDP) on a fixed port, a protocol with fast data transfers but which does not require establishing a formal connection.