October 27, 2025
Cloudflare Radar has evolved significantly since its 2020 launch, offering deeper insights into Internet security, routing, and traffic with new tools and data that help anyone understand what's happening online....
October 27, 2025
Coinciding with the ACM’s Internet Measurement Conference, the Cloudflare Research team is publishing a series of posts this week to share their research on building a more measurable, resilient, and transparent Internet. These posts will cover foundational concepts in Internet measurement, Internet resilience, cryptography, and networking. ...
October 27, 2025
In this blog post we’ll discuss how Cloudflare thinks about measuring Internet quality, how our own Cloudflare speed test works, and our future plans for providing Internet measurement tools that help everyone build a better Internet....
October 16, 2025
There's no way to audit a site’s client-side code as it changes, making it hard to trust sites that use cryptography. We preview a specification we co-authored that adds auditability to the web....
September 24, 2025
After a year since we started enabling Automatic SSL/TLS, we want to talk about these results, why they matter, and how we’re preparing for the next leap in Internet security....
July 01, 2025
Bots can start authenticating to Cloudflare using public key cryptography, preventing them from being spoofed and allowing origins to have confidence in their identity....
June 26, 2025
Orange Meets, our open-source video calling web application, now supports end-to-end encryption using the MLS protocol with continuous group key agreement....
May 15, 2025
Bots now browse like humans. We're proposing bots use cryptographic signatures so that website owners can verify their identity. Explanations and demonstration code can be found within the post....
April 11, 2025
Learn about recent developments in Certificate Transparency (CT), and how we built a next-generation CT log on top of Cloudflare's Developer Platform....
March 25, 2025
OPKSSH (OpenPubkey SSH) is now open-sourced as part of the OpenPubkey project....
March 21, 2025
This post is a beginner's guide to lattices, the math at the heart of the transition to post-quantum (PQ) cryptography. It explains how to do lattice-based encryption and authentication from scratch....
March 20, 2025
We are closing the cleartext HTTP ports entirely for Cloudflare API traffic. This prevents the risk of clients unintentionally leaking their secret API keys in cleartext during the initial request. ...
March 19, 2025
It's hard to tell the difference between web content produced by humans and web content produced by AI. We're taking new approach to making AI content distinguishable without impacting performance. ...
March 17, 2025
We’re thrilled to announce that organizations can now protect their sensitive corporate network traffic against quantum threats by tunneling it through Cloudflare’s Zero Trust platform....
December 26, 2024
If you want to know what cache revalidation is, how it works, and why it can involve rolling a die, read on. This blog post presents a lock-free probabilistic approach to cache revalidation, along ...
November 08, 2024
We describe how Cloudflare uses a custom Lisp-like programming language and formal verifier (written in Racket and Rosette) to prevent logical contradictions in our authoritative DNS nameserver’s behavior....
November 07, 2024
NIST has standardized four post-quantum signature schemes so far, and they’re not done yet: there are fourteen new candidates in the running for standardization....
September 25, 2024
Speed Brain uses the Speculation Rules API to prefetch content for the user's likely next navigations. The goal is to download a web page to the browser before a user navigates to it. ...
September 24, 2024
Cloudflare is now verifying WhatsApp’s Key Transparency audit proofs to ensure the security of end-to-end encrypted messaging conversations without having to manually check QR codes. We are publishing the results of the proof verification to https://dash.key-transparency.cloudfla...
