Cloudflare press releases or official blog posts

Cloudflare Stops Record 3.8 Tbps DDoS Attack From Botnet of Hijacked Routers

Oct 2, 2024, 01:05 PM

Cloudflare has successfully mitigated the largest ever reported hyper-volumetric Distributed Denial of Service (DDoS) attack, which peaked at 3.8 terabits per second and 2.14 billion packets per second. The attack, detected and handled automatically by Cloudflare's DDoS defenses without any customer impact, caused no noticeable damage. This incident was part of a month-long campaign involving over a hundred hyper-volumetric Layer 3/4 DDoS attacks targeting the company's infrastructure. The attack originated from a botnet comprising hijacked Asus and MikroTik routers, along with compromised DVRs and web servers. "Not all records you're happy about breaking," Cloudflare noted in reference to the unprecedented scale of the attack.