Incident Response

May 7, 2026

How Cloudflare responded to the Copy Fail Linux vulnerability

When a critical Linux kernel privilege escalation was publicly disclosed, Cloudflare's security and engineering teams detected, investigated, and mitigated the threat across our global fleet, confirming zero customer impact and no malicious exploitation.

February 21, 2026

Cloudflare outage on February 20, 2026

Cloudflare suffered a service outage on February 20, 2026. A subset of customers who use Cloudflares Bring Your Own IP (BYOIP) service saw their routes to the Internet withdrawn via Border Gateway Protocol (BGP).

October 9, 2025

Introducing REACT: Why We Built an Elite Incident Response Team

We're launching Cloudforce One REACT, a team of expert security responders designed to eliminate the gap between perimeter defense and internal incident response.