To quash speculation of a cyberattack or BGP hijack incident causing the recent 1.1.1.1 Resolver service outage, Cloudflare explains in a post mortem that the incident was caused by an internal misconfiguration. […]
from https://www.bleepingcomputer.com/news/security/cloudflare-says-1111-outage-not-caused-by-attack-or-bgp-hijack/