Ransom DDoS attacks in Q4 2021 rose 29% YoY and 175% QoQ; China has the highest percentage of originating network traffic for application-layer attacks This post is also available in 日本語, Deutsch, Français, Español, 한국어. The Cloudflare Blog 2022-01-11 Deutsch, Español, Français, QoQ, China Related Coverage View article ZDNet Extortion DDoS attacks grow stronger and more common BleepingComputer · Ionut Ilascu Cloudflare Report Highlights Staggering Increase in DDoS Attacks in Q4 2021 InfoQ · Sergio De Simone