The distributed denial-of-service (DDoS) botnet known as AISURU/Kimwolf has been attributed to a record-setting attack that peaked at 31.4 Terabits per second (Tbps) and lasted only 35 seconds.
Cloudflare, which automatically detected and mitigated the activity, said it’s part of a growing number of hyper-volumetric HTTP DDoS attacks mounted by the botnet in the fourth quarter of 2025. The
