
Afterwards, Cloudflare CEO Matthew Prince said that this round of downtime was not caused by hacker DDOS attacks, but the server was overloaded. "Due to a bug in the Cloudflare Web Application Firewall (WAF) service, this error caused a significant increase in CPU usage, causing a crash in the primary and backup systems and causing the user's website to encounter a 502 error; therefore, Cloudflare is temporarily down. Part of the WAF's functionality, solved the bug that caused the problem, and re-launched the WAF service."