TAG
When a failed DNSSEC key rollover took down the .al TLD, we deployed a Negative Trust Anchor to restore resolution. This time, though, clients didn't have to take our word for it: 1.1.1.1 returned EDE 33, a new DNS error code that signals directly in the response that DNSSEC validation was bypassed.
On May 5, 2026, DENIC published broken DNSSEC signatures for the .de TLD, making millions of domains unreachable. Here's what 1.1.1.1 saw, how serve stale cushioned the impact, and how we restored resolution.
Panics in Rust Workers were historically fatal, poisoning the entire instance. By collaborating upstream on the wasm‑bindgen project, Rust Workers now support resilient critical error recovery, including panic unwinding using WebAssembly Exception Handling.
Physical data center maintenance is risky on a global network. We built a maintenance scheduler on Workers to safely plan disruptive operations, while solving scaling challenges by viewing the state of our infrastructure through a graph interface on top of multiple data sources and metrics pipelines.
In line with CISA’s Secure By Design pledge, Cloudflare shares its vulnerability disclosure process, CVE issuance criteria, and CNA duties.
Sri Pulla, Martin Schwarzl, and Trishna
Learn how Cloudflare tackles the challenge of scaling global service health metrics to safely release new software across our global network.
Cloudflare strengthens its commitment to cybersecurity by joining CISA's "Secure by Design" pledge. In line with this, we're reducing the prevalence of vulnerability classes across our products.
Sri Pulla, Trishna, and Jordan Lilly
We realized that we need a way to automatically heal our platform from an operations perspective, and designed and built a workflow orchestration platform to provide these self-healing capabilities
Security considerations should be an integral part of software’s design, not an afterthought. Explore how Cloudflare adheres to CISA’s Secure by Design principles to shift the industry
A deep dive into the recent incidents relating to Workers KV, and how we’re going to fix them
More than 162 million fans tuned in to the 2023 Eurovision Song Contest, the first year that non-participating countries could also vote. Cloudflare helped scale and protect the voting application based.io, built by once.net using our rapid DNS infrastructure, CDN, Cloudflare Pages and Turnstile
Researchers have recently published the discovery of a new DDoS reflection/amplification attack vector leveraging the SLP protocol. Cloudflare expects the prevalence of SLP-based DDoS attacks to rise in the coming weeks
We split a proxy application into multiple services to improve development agility and reliability. This blog also shares some common patterns we are leveraging to design a system supporting zero-downtime restart
In this blog post we’ll discuss how Cloudflare Workers enabled us to quickly improve the resiliency of a legacy system
Cloudflare Waiting Room helping organizations around the world to stifle COVID-19 and aid with easy rapid vaccinations.
In Cloudflare’s core data centers, we are using Kubernetes to run many of the diverse services that help us control Cloudflare’s edge. We are automating some aspects of node remediation to keep the Kubernetes clusters healthy.
Today we announced support for encrypted SNI, an extension to the TLS 1.3 protocol that improves privacy of Internet users.
Cloudflare launched on September 27, 2010. Since then, we've considered September 27th our birthday. This Thursday we'll be turning 8 years old. Ever since our first birthday, we've used the occasion
