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Luke Valenta

Austin, TX

July 29, 2026
Post-quantum authentication to origins is now supported

Cloudflare now supports post-quantum (PQ) authentication when connecting to customer origin servers via Authenticated Origin Pulls and Custom Origin Trust Store. This is the first step towards providing PQ authentication for all Cloudflare products.

Luke Valenta and Kevin Guthrie

November 3, 2025
Fresh insights from old data: corroborating reports of Turkmenistan IP unblocking and firewall testing

Cloudflare used historical data to investigate reports of potential new firewall tests in Turkmenistan. Shifts in TCP resets/timeouts across ASNs corroborate large-scale network control system changes.

Luke Valenta and Marwan Fayed

October 28, 2025
Keeping the Internet fast and secure: introducing Merkle Tree Certificates

Cloudflare is launching an experiment with Chrome to evaluate fast, scalable, and quantum-ready Merkle Tree Certificates, all without degrading performance or changing WebPKI trust relationships.

Luke Valenta,Christopher Patton,Vânia Gonçalves, and Bas Westerbaan

September 26, 2025
Introducing new regional Internet traffic and Certificate Transparency insights on Cloudflare Radar

Cloudflare Radar now offers a Certificate Transparency dashboard for monitoring TLS certificate activity, and new regional traffic insights for a sub-national perspective on Internet trends.

David Belson,André Jesus, and Luke Valenta

September 19, 2025
You don’t need quantum hardware for post-quantum security

Post-quantum cryptography protects against quantum threats using today’s hardware. Quantum tech like QKD may sound appealing, but it isn’t necessary or sufficient to secure organizations.

Luke Valenta

April 11, 2025
A next-generation Certificate Transparency log built on Cloudflare Workers

Learn about recent developments in Certificate Transparency (CT), and how we built a next-generation CT log on top of Cloudflare's Developer Platform.

Luke Valenta

November 7, 2024
A look at the latest post-quantum signature standardization candidates

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.

Bas Westerbaan and Luke Valenta

September 5, 2024
Bringing insights into TCP resets and timeouts to Cloudflare Radar

New TCP resets and timeouts dataset on Cloudflare Radar surfaces connection tampering, scanning, DoS attacks, and more.

Luke Valenta

September 5, 2024
A global assessment of third-party connection tampering

Cloudflare brings visibility to the practice of connection tampering as observed from our global network.

Ram Sundara Raman,Luke Valenta, and Marwan Fayed

August 20, 2024
NIST’s first post-quantum standards

NIST has published the first cryptographic standards for protecting against attacks from quantum computers. Learn what this means for you and your organization.

Luke Valenta,Vânia Gonçalves, and Bas Westerbaan

March 8, 2024
Harnessing chaos in Cloudflare offices

This blog post will cover the new sources of “chaos” that have been added to LavaRand and how you can make use of that harnessed chaos in your next application

Cefan Daniel Rubin,Luke Valenta, and Thibault Meunier

September 29, 2023
Cloudflare now uses post-quantum cryptography to talk to your origin server

Starting today, you can secure the connection between Cloudflare and your origin server with post-quantum cryptography

Suleman Ahmad,Luke Valenta, and Bas Westerbaan

October 14, 2021
Privacy-Preserving Compromised Credential Checking

Announcing a public demo and open-sourced implementation of a privacy-preserving compromised credential checking service

Luke Valenta,Cefan Daniel Rubin, and Christopher Wood

October 12, 2021
Introducing SSL/TLS Recommender

Introducing customized recommendations to improve the security of your website.

Suleman Ahmad,Talha Paracha, and Luke Valenta

October 30, 2019
The TLS Post-Quantum Experiment

In a June 2019 experiment with Google, we implemented two post-quantum key exchanges, integrated them into our TLS stack and deployed the implementation on edge servers and in Chrome Canary clients.

Kris Kwiatkowski and Luke Valenta

March 18, 2019
Monsters in the Middleboxes: Introducing Two New Tools for Detecting HTTPS Interception

The practice of HTTPS interception continues to be commonplace on the Internet. This blog post discusses types of monster-in-the-middle devices and software, and how to detect them.

Gabbi Fisher and Luke Valenta

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