Cloudflare suffers BGP hijacking incident

On June 27, Cloudflate suffered a BGP hijacking as well as a route leak that left many users globally without access to the DNS server at address 1.1.1.1.

A BGP hijacking attack (Border Gateway Protocol hijacking) is a malicious redirection of Internet traffic that takes advantage of the fact that BGP, the Internet's routing protocol, is trusted by default for all movements. This, coupled with a route leak, led to the propagation of the incident beyond its anticipated scope, and resulted in the service being unavailable on 300 networks in 70 countries.

Cloudflare has apologized in a statement on its blog, as well as extensively explained the entire process and traffic measurements for every moment of the incident and more.