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Four, just four: that’s the key to break into any unpatched connection on the Internet that is using eMudhra certificates. Here’s how we quickly patched Cloudflare, what evidence we can see of attempted exploitation, and how much of the rest of the Internet remains exposed.
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.
Cloudflare suffered a service outage on February 20, 2026. A subset of customers who use Cloudflare’s Bring Your Own IP (BYOIP) service saw their routes to the Internet withdrawn via Border Gateway Protocol (BGP).
We're launching Cloudforce One REACT, a team of expert security responders designed to eliminate the gap between perimeter defense and internal incident response.
