Cybersecurity researchers have disclosed two denial-of-service (DoS) attacks that exploit how major content delivery networks (CDNs) convert client-facing HTTP/3 traffic into HTTP/1.1 requests to the websites they front, amplifying a low-bandwidth request stream by up to 350x against the origin server.

The attacks, collectively named "CDN Tsunami," were evaluated against Alibaba, Baidu,



Source: TheHackerNews
Source Link: https://thehackernews.com/2026/08/cdn-tsunami-attack-abuses-http3.html