DDoS threat report for 2023 Q3
Oct 26, 2023Omer Yoachimik, Jorge Pacheco
Summary
This post details the evolution of Cloudflare's DDoS mitigation capabilities, specifically highlighting the unprecedented scale of HTTP/2 Rapid Reset attacks in Q3 2023. It quantifies the increase in HTTP DDoS traffic (65% QoQ) and L3/4 DDoS attacks (14% QoQ), detailing the largest attacks observed (201M rps for HTTP, 2.6 Tbps for L3/4). It also discusses the shift in targeted industries and the sources of these attacks, including the impact of VM-based botnets and the exploitation of HTTP/2. The post also references an engineering blog post for a deeper technical dive into the HTTP/2 Rapid Reset vulnerability and mitigation strategies.
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