ｻｲﾊﾞｰ攻撃では無く、不正なｿﾌﾄによる異常なcpuの使用率が原因だとさ

https://blog.cloudflare.com/cloudflare-outage/
＞This was not an attack (as some have speculated) and we are incredibly
＞sorry that this incident occurred. Internal teams are meeting as I write
＞performing a full post-mortem to understand how this occurred and
＞how we prevent this from ever occurring again.