This post is also available in 简体中文, Français, Deutsch, Italiano, 日本語, 한국어, Português, Español (Latinoamérica), Español, Рyсский, Polski, Nederlands and 繁體中文. Note: This post was updated to clarify the relationship of the internal WAF tool with the incident on Dec. 5. On December 5, 2025, at 08:47 UTC (all times in this blog are UTC), a portion of Cloudflare’s network began experiencing significan

