2025-11-1812 min readOn 18 November 2025 at 11:20 UTC (all times in this blog are UTC), Cloudflare's network began experiencing significant failures to deliver core network traffic. This showed up to Internet users trying to access our customers' sites as an error page indicating a failure within Cloudflare's network. The issue was not caused, directly or indirectly, by a cyber attack or malicious activity of any kind. Instead, it was triggered by a change to one of our database systems' permiss...