2025 Q4 DDoS threat report: A record-setting 31.4 Tbps attack caps a year of massive DDoS assaults

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This post details the evolution of DDoS attacks in 2025, highlighting a 121% surge and record-breaking attack volumes. It introduces the Aisuru-Kimwolf botnet and its 'The Night Before Christmas' campaign, which utilized hyper-volumetric HTTP DDoS attacks. The post also analyzes network-layer DDoS attack growth, specific attack vectors like SYN floods and Mirai-generated attacks, and the impact on various industries and geographic locations. It emphasizes Cloudflare's autonomous DDoS defense systems' ability to automatically detect and mitigate these massive assaults.